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Melnikov AR, Ivanov MY, Samsonenko AA, Getmanov YV, Nikovskiy IA, Matiukhina AK, Zorina-Tikhonova EN, Voronina JK, Goloveshkin AS, Babeshkin KA, Efimov NN, Kiskin MA, Eremenko IL, Fedin MV, Veber SL. Inductive detection of temperature-induced magnetization dynamics of molecular spin systems. J Chem Phys 2024; 160:224201. [PMID: 38856059 DOI: 10.1063/5.0211936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/24/2024] [Indexed: 06/11/2024] Open
Abstract
The development and technological applications of molecular spin systems require versatile experimental techniques to characterize and control their static and dynamic magnetic properties. In the latter case, bulk spectroscopic and magnetometric techniques, such as AC magnetometry and pulsed electron paramagnetic resonance, are usually employed, showing high sensitivity, wide dynamic range, and flexibility. They are based on creating a nonequilibrium state either by changing the magnetic field or by applying resonant microwave radiation. Another possible source of perturbation is a laser pulse that rapidly heats the sample. This approach has proven to be one of the most useful techniques for studying the kinetics and mechanism of chemical and biochemical reactions. Inspired by these works, we propose an inductive detection of temperature-induced magnetization dynamics as applied to the study of molecular spin systems and describe the general design and construction of a particular induction probehead, taking into account the constraints imposed by the cryostat and electromagnet. To evaluate the performance, several coordination compounds of VO2+, Co2+, and Dy3+ were investigated using low-energy pulses of a terahertz free electron laser of the Novosibirsk free electron laser facility as a heat source. All measured magnetization dynamics were qualitatively or quantitatively described using a proposed basic theoretical model and compared with the data obtained by alternating current magnetometry. Based on the results of the research, the possible scope of applications of inductive detection and its advantages and disadvantages in comparison with standard methods are discussed.
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Affiliation(s)
- Anatoly R Melnikov
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., Novosibirsk 630090, Russian Federation
- Novosibirsk State University, 1, Pirogova Str., Novosibirsk 630090, Russian Federation
| | - Mikhail Yu Ivanov
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., Novosibirsk 630090, Russian Federation
| | - Arkady A Samsonenko
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., Novosibirsk 630090, Russian Federation
- Novosibirsk State University, 1, Pirogova Str., Novosibirsk 630090, Russian Federation
| | - Yaroslav V Getmanov
- Novosibirsk State University, 1, Pirogova Str., Novosibirsk 630090, Russian Federation
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 11, Acad. Lavrentieva Ave., Novosibirsk 630090, Russian Federation
| | - Igor A Nikovskiy
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28, Vavilova Str., Moscow 119334, Russian Federation
| | - Anna K Matiukhina
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Ekaterina N Zorina-Tikhonova
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Julia K Voronina
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Alexander S Goloveshkin
- A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 28, Vavilova Str., Moscow 119334, Russian Federation
| | - Konstantin A Babeshkin
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Nikolay N Efimov
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Mikhail A Kiskin
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Igor L Eremenko
- N.S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31, Leninsky Ave., Moscow 119991, Russian Federation
| | - Matvey V Fedin
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., Novosibirsk 630090, Russian Federation
- Novosibirsk State University, 1, Pirogova Str., Novosibirsk 630090, Russian Federation
| | - Sergey L Veber
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., Novosibirsk 630090, Russian Federation
- Novosibirsk State University, 1, Pirogova Str., Novosibirsk 630090, Russian Federation
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Liu P, Yan J, Afanasev A, Benson SV, Hao H, Mikhailov SF, Popov VG, Wu YK. Generation of superposed orbital angular momentum beams using a free-electron laser oscillator. OPTICS EXPRESS 2024; 32:2235-2244. [PMID: 38297758 DOI: 10.1364/oe.510649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/21/2023] [Indexed: 02/02/2024]
Abstract
With wavelength tunability, free-electron lasers (FELs) are well-suited for generating orbital angular momentum (OAM) beams in a wide photon energy range. We report here the first experimental demonstration of OAM beam generation using an oscillator FEL with the tens of picosecond pulse duration. Lasing around 458 nm, we have produced the four lowest orders of superposed Laguerre-Gaussian beams using a very long FEL resonator of 53.73 m. The produced beams have good beam quality, excellent stability, and substantial average power. We have also developed a pulsed operation mode for these beams with a highly reproducible temporal structure for a range of repetition rate of 1-30 Hz. This development can be extended to short wavelengths, for example to x-rays using a future x-ray FEL oscillator. The OAM operation of such a storage-ring FEL also paves the way for the generation of OAM gamma-ray beams via inverse Compton scattering.
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Cao L, Liu J, Wang Z, Huang D, Feng C, Zhao Z. Multiplexed emitting system for an energy-recovery-linac-based coherent light source. JOURNAL OF SYNCHROTRON RADIATION 2023; 30:1054-1063. [PMID: 37860938 PMCID: PMC10624027 DOI: 10.1107/s1600577523008263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/20/2023] [Indexed: 10/21/2023]
Abstract
Recently, a novel approach has been proposed to produce ultrashort, fully coherent high-repetition-rate EUV and X-ray radiation by combining an energy recovery linac (ERL) with the angular-dispersion-induced microbunching methodology. It is critical to maintain microbunching when the beam passes through bending magnets between the undulators, which results in difficulties supporting multiple beamlines. In this paper, the design of a multiplexed emitting system consisting of multi-bend achromats, matching sections and radiators to facilitate the multi-beamline operation is presented. Theoretical analysis and numerical simulations have been carried out and the results show that the microbunching and beam quality can be well maintained after four times of bending. Five radiation pulses with a central wavelength of 13.5 nm and peak power at the MW level have been produced by the same electron beam via this multiplexed emitting system. The proposed method holds potential in the multi-beamline operation of ERL- or storage-ring-based coherent light sources.
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Affiliation(s)
- Lu Cao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Junhao Liu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People’s Republic of China
- ShanghaiTech University, Shanghai 201210, People’s Republic of China
| | - Zhen Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China
| | - Dazhang Huang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China
| | - Chao Feng
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China
| | - Zhentang Zhao
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People’s Republic of China
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Melnikov AR, Kalneus EV, Getmanov YV, Shevchenko DA, Gerasimov VV, Anisimov OA, Fedin MV, Veber SL. Comparative Study of Single Crystal and Polymeric Pyroelectric Detectors in the 0.9-2.0 THz Range Using Monochromatic Laser Radiation of the NovoFEL. Polymers (Basel) 2023; 15:4124. [PMID: 37896368 PMCID: PMC10610270 DOI: 10.3390/polym15204124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
The development of efficient and reliable sensors operating at room temperature is essential to advance the application of terahertz (THz) science and technology. Pyroelectric THz detectors are among the best candidates, taking into account their variety, outstanding performance, ease of fabrication, and robustness. In this work, we compare the performance of six different detectors, based on either LaTiO3 crystal or different polymeric films, using monochromatic radiation of the Novosibirsk Free Electron Laser facility (NovoFEL) in the frequency range of 0.9-2.0 THz. The main characteristics, including noise equivalent power and frequency response, were determined for all of them. Possible reasons for the differences in the obtained characteristics are discussed on the basis of the main physicochemical characteristics and optical properties of the sensitive area. At least three detectors showed sufficient sensitivity to monitor the shape and duration of the THz macropulses utilizing only a small fraction of the THz radiation from the primary beam. This capability is crucial for accurate characterization of THz radiation during the main experiment at various specialized endstations at synchrotrons and free electron lasers. As an example of such characterization, the typical stability of the average NovoFEL radiation power at the beamline of the electron paramagnetic resonance endstation was investigated.
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Affiliation(s)
- Anatoly R. Melnikov
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., 630090 Novosibirsk, Russia;
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
| | - Evgeny V. Kalneus
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3, Institutskaya Str., 630090 Novosibirsk, Russia;
| | - Yaroslav V. Getmanov
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
- Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, 11, Acad. Lavrentieva Ave., 630090 Novosibirsk, Russia;
| | - Darya A. Shevchenko
- Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, 11, Acad. Lavrentieva Ave., 630090 Novosibirsk, Russia;
| | - Vasily V. Gerasimov
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
- Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, 11, Acad. Lavrentieva Ave., 630090 Novosibirsk, Russia;
| | - Oleg A. Anisimov
- Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3, Institutskaya Str., 630090 Novosibirsk, Russia;
| | - Matvey V. Fedin
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., 630090 Novosibirsk, Russia;
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
| | - Sergey L. Veber
- International Tomography Center, Siberian Branch of the Russian Academy of Sciences, 3a, Institutskaya Str., 630090 Novosibirsk, Russia;
- Novosibirsk State University, 1, Pirogova Str., 630090 Novosibirsk, Russia; (E.V.K.); (Y.V.G.); (V.V.G.)
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First demonstration of coherent resonant backward diffraction radiation for a quasi-monochromatic terahertz-light source. Sci Rep 2020; 10:7526. [PMID: 32371899 PMCID: PMC7200690 DOI: 10.1038/s41598-020-64426-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 04/15/2020] [Indexed: 12/04/2022] Open
Abstract
We proposed coherent resonant backward diffraction radiation (CRBDR), which generates wavelength-tunable quasi-monochromatic lights using a compact diffractor assembly in an accelerator facility of high-energy electron beams, as a unique intense terahertz (THz) light source. Superimposing the coherent backward diffracted radiation emitted by periodically arranged hollow diffractors, it is possible to amplify the frequency components satisfying a resonant condition, and make the radiation monochromatic. We demonstrated the CRBDR using the L-band linac at the Institute for Integrated Radiation and Nuclear Science at Kyoto University. It was observed that the coherent backward diffraction radiation was amplified more than three times at a frequency which was the fundamental resonant frequency in the CRBDR theory. Moreover, the number of diffractors at the saturation of the radiation power was consistent with the number estimated from the electron distribution in a bunch. The experimental results show that the CRBDR is useful as a quasi-monochromatic light source in the THz band.
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Shevchenko OA, Melnikov AR, Tararyshkin SV, Getmanov YV, Serednyakov SS, Bykov EV, Kubarev VV, Fedin MV, Veber SL. Electronic Modulation of THz Radiation at NovoFEL: Technical Aspects and Possible Applications. MATERIALS 2019; 12:ma12193063. [PMID: 31547101 PMCID: PMC6803909 DOI: 10.3390/ma12193063] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/12/2019] [Accepted: 09/18/2019] [Indexed: 11/23/2022]
Abstract
The Novosibirsk Free Electron Laser (NovoFEL) facility is able to produce high-power tunable terahertz (THz) laser radiation in quasi-continuous mode. The ability to control/shape this THz radiation is required in a number of user experiments. In this work we propose a modulation approach suitable for free electron lasers based on recuperation design. It allows for generating THz macropulses of a desirable length, down to several microseconds (limited by a quality factor of FEL optical resonator). Using this approach, macropulses in the time window from several microseconds to several hundred microseconds have been shown for three possible frequency ranges: mid-infrared (~1100 cm−1), far-infrared (~200 cm−1) and THz (~40 cm−1). In each case, the observed rise and decay of the macropulse have been measured and interpreted. The advantage of using short macropulses at the maximum peak power available has been demonstrated with the time-resolved Electron Paramagnetic Resonance (EPR) spectroscopy.
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Affiliation(s)
- Oleg A Shevchenko
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Anatoly R Melnikov
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Voevodsky Institute of Chemical Kinetics and Combustion of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Novosibirsk State University, 630090 Novosibirsk, Russia.
| | - Sergey V Tararyshkin
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Yaroslav V Getmanov
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Novosibirsk State University, 630090 Novosibirsk, Russia.
| | - Stanislav S Serednyakov
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Evgeny V Bykov
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
| | - Vitaly V Kubarev
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Novosibirsk State University, 630090 Novosibirsk, Russia.
| | - Matvey V Fedin
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Novosibirsk State University, 630090 Novosibirsk, Russia.
| | - Sergey L Veber
- International Tomography Center of the Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
- Novosibirsk State University, 630090 Novosibirsk, Russia.
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Veber SL, Tumanov SV, Fursova EY, Shevchenko OA, Getmanov YV, Scheglov MA, Kubarev VV, Shevchenko DA, Gorbachev II, Salikova TV, Kulipanov GN, Ovcharenko VI, Fedin MV. X-band EPR setup with THz light excitation of Novosibirsk Free Electron Laser: Goals, means, useful extras. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2018; 288:11-22. [PMID: 29360045 DOI: 10.1016/j.jmr.2018.01.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
Electron Paramagnetic Resonance (EPR) station at the Novosibirsk Free Electron Laser (NovoFEL) user facility is described. It is based on X-band (∼9 GHz) EPR spectrometer and operates in both Continuous Wave (CW) and Time-Resolved (TR) modes, each allowing detection of either direct or indirect influence of high-power NovoFEL light (THz and mid-IR) on the spin system under study. The optics components including two parabolic mirrors, shutters, optical chopper and multimodal waveguide allow the light of NovoFEL to be directly fed into the EPR resonator. Characteristics of the NovoFEL radiation, the transmission and polarization-retaining properties of the waveguide used in EPR experiments are presented. The types of proposed experiments accessible using this setup are sketched. In most practical cases the high-power radiation applied to the sample induces its rapid temperature increase (T-jump), which is best visible in TR mode. Although such influence is a by-product of THz radiation, this thermal effect is controllable and can deliberately be used to induce and measure transient signals of arbitrary samples. The advantage of tunable THz radiation is the absence of photo-induced processes in the sample and its high penetration ability, allowing fast heating of a large portion of virtually any sample and inducing intense transients. Such T-jump TR EPR spectroscopy with THz pulses has been previewed for the two test samples, being a useful supplement for the main goals of the created setup.
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Affiliation(s)
- Sergey L Veber
- International Tomography Center, SB RAS, Novosibirsk 630090, Russia; Novosibirsk State University, Novosibirsk 630090, Russia.
| | - Sergey V Tumanov
- International Tomography Center, SB RAS, Novosibirsk 630090, Russia; Novosibirsk State University, Novosibirsk 630090, Russia
| | - Elena Yu Fursova
- International Tomography Center, SB RAS, Novosibirsk 630090, Russia
| | - Oleg A Shevchenko
- Budker Institute of Nuclear Physics, SB RAS, Novosibirsk 630090, Russia
| | | | | | - Vitaly V Kubarev
- Novosibirsk State University, Novosibirsk 630090, Russia; Budker Institute of Nuclear Physics, SB RAS, Novosibirsk 630090, Russia
| | | | | | | | | | | | - Matvey V Fedin
- International Tomography Center, SB RAS, Novosibirsk 630090, Russia; Novosibirsk State University, Novosibirsk 630090, Russia
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Vinokurov N. Generating High Power Terahertz and Far Infrared Electromagnetic Radiation with Relativistic Electrons. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201819500004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Knyazev BA, Bagryanskaya EG, Chesnokov EN, Choporova YY, Gerasimov VV, Getmanov YV, Goldenberg BG, Kulipanov GN, Kozlov AS, Kubarev VV, Nikitin AK, Pavelyev VS, Peltek SE, Popik VM, Salikova TV, Scheglov MA, Serednyakov SS, Shevchenko OA, Skrinsky AN, Veber SL, Vinokurov NA. Novosibirsk Free Electron Laser as a User Facility. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.phpro.2016.11.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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