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Temperature dynamics of magnetoactive compounds under terahertz irradiation: characterization by an EPR study. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3543-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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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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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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Sahoo PR, Kumar S. Synthesis of an optically switchable salicylaldimine substituted naphthopyran for selective and reversible Cu2+ recognition in aqueous solution. RSC Adv 2016. [DOI: 10.1039/c5ra24857d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A light controlled reversible switch for copper ion was synthesized by substituting photochromic naphthopyran with a salicylaldimine moiety.
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Affiliation(s)
| | - Satish Kumar
- Department of Chemistry
- St. Stephen’s College
- Delhi – 110007
- India
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Krzystek J, Telser J. Measuring giant anisotropy in paramagnetic transition metal complexes with relevance to single-ion magnetism. Dalton Trans 2016; 45:16751-16763. [DOI: 10.1039/c6dt01754a] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
“Giant magnetic anisotropy” is a phenomenon identified in certain coordination complexes of nd- and nf-block ions. The strengths and weaknesses of multiple methods used to measure it are evaluated.
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Affiliation(s)
- J. Krzystek
- National High Magnetic Field Laboratory
- Florida State University
- Tallahassee
- USA
| | - Joshua Telser
- Department of Biological
- Chemical and Physical Sciences
- Roosevelt University
- Chicago
- USA
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Kulipanov GN, Bagryanskaya EG, Chesnokov EN, Choporova YY, Gerasimov VV, Getmanov YV, Kiselev SL, Knyazev BA, Kubarev VV, Peltek SE, Popik VM, Salikova TV, Scheglov MA, Seredniakov SS, Shevchenko OA, Skrinsky AN, Veber SL, Vinokurov NA. Novosibirsk Free Electron Laser—Facility Description and Recent Experiments. IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1109/tthz.2015.2453121] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Fedin MV, Veber SL, Bagryanskaya EG, Ovcharenko VI. Electron paramagnetic resonance of switchable copper-nitroxide-based molecular magnets: An indispensable tool for intriguing systems. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2014.11.015] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Barskaya IY, Tretyakov EV, Sagdeev RZ, Ovcharenko VI, Bagryanskaya EG, Maryunina KY, Takui T, Sato K, Fedin MV. Photoswitching of a Thermally Unswitchable Molecular Magnet Cu(hfac)2Li-Pr Evidenced by Steady-State and Time-Resolved Electron Paramagnetic Resonance. J Am Chem Soc 2014; 136:10132-8. [DOI: 10.1021/ja504774q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Irina Yu. Barskaya
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
| | - Evgeny V. Tretyakov
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
| | - Renad Z. Sagdeev
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Kazan (Volga Region) Federal University, Kremlevskaya St. 18, 420008 Kazan, Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
| | - Elena G. Bagryanskaya
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Pr. Lavrentjeva 16, 630090 Novosibirsk, Russia
| | - Kseniya Yu. Maryunina
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Department
of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Takeji Takui
- Department
of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
- FIRST-Quantum Information Processing Project, JSPS, Tokyo 101-8430, Japan
| | - Kazunobu Sato
- Department
of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
- FIRST-Quantum Information Processing Project, JSPS, Tokyo 101-8430, Japan
| | - Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
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