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Strehlow J, Forestier-Colleoni P, McGuffey C, Bailly-Grandvaux M, Daykin TS, McCary E, Peebles J, Revet G, Zhang S, Ditmire T, Donovan M, Dyer G, Fuchs J, Gaul EW, Higginson DP, Kemp GE, Martinez M, McLean HS, Spinks M, Sawada H, Beg FN. The response function of Fujifilm BAS-TR imaging plates to laser-accelerated titanium ions. Rev Sci Instrum 2019; 90:083302. [PMID: 31472598 DOI: 10.1063/1.5109783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Calibrated diagnostics for energetic particle detection allow for the systematic study of charged particle sources. The Fujifilm BAS-TR imaging plate (IP) is a reusable phosphorescent detector for radiation applications such as x-ray and particle beam detection. The BAS-TR IP has been absolutely calibrated to many low-Z (low proton number) ions, and extending these calibrations to the mid-Z regime is beneficial for the study of laser-driven ion sources. The Texas Petawatt Laser was used to generate energetic ions from a 100 nm titanium foil, and charge states Ti10+ through Ti12+, ranging from 6 to 27 MeV, were analyzed for calibration. A plastic detector of CR-39 with evenly placed slots was mounted in front of the IP to count the number of ions that correspond with the IP levels of photo-stimulated luminescence (PSL). A response curve was fitted to the data, yielding a model of the PSL signal vs ion energy. Comparisons to other published response curves are also presented, illustrating the trend of PSL/nucleon decreasing with increasing ion mass.
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Affiliation(s)
- J Strehlow
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - P Forestier-Colleoni
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - C McGuffey
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - M Bailly-Grandvaux
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - T S Daykin
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - E McCary
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - J Peebles
- Laboratory for Laser Energetics, Rochester, New York 14623, USA
| | - G Revet
- LULI, Ecole Polytechnique, Route de Saclay, 91128 Palaiseau, France
| | - S Zhang
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - T Ditmire
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - M Donovan
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - G Dyer
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - J Fuchs
- LULI, Ecole Polytechnique, Route de Saclay, 91128 Palaiseau, France
| | - E W Gaul
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - D P Higginson
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - G E Kemp
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Martinez
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - H S McLean
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M Spinks
- Center for High Energy Density Science, University of Texas, Austin, Texas 78712, USA
| | - H Sawada
- Department of Physics, University of Nevada, Reno, Nevada 89557, USA
| | - F N Beg
- Department of Mechanical and Aerospace Engineering, University of California-San Diego, La Jolla, California 92093, USA
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Pomerantz I, McCary E, Meadows AR, Arefiev A, Bernstein AC, Chester C, Cortez J, Donovan ME, Dyer G, Gaul EW, Hamilton D, Kuk D, Lestrade AC, Wang C, Ditmire T, Hegelich BM. Ultrashort pulsed neutron source. Phys Rev Lett 2014; 113:184801. [PMID: 25396373 DOI: 10.1103/physrevlett.113.184801] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Indexed: 06/04/2023]
Abstract
We report on a novel compact laser-driven neutron source with an unprecedented short pulse duration (<50 ps) and high peak flux (>10(18) n/cm(2)/s), an order of magnitude higher than any existing source. In our experiments, high-energy electron jets are generated from thin (<3 μm) plastic targets irradiated by a petawatt laser. These intense electron beams are employed to generate neutrons from a metal converter. Our method opens venues for enhancing neutron radiography contrast and for creating astrophysical conditions of heavy element synthesis in the laboratory.
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Affiliation(s)
- I Pomerantz
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - E McCary
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - A R Meadows
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - A Arefiev
- Institute for Fusion Studies, The University of Texas, Austin, Texas 78712, USA
| | - A C Bernstein
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - C Chester
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - J Cortez
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - M E Donovan
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - G Dyer
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - E W Gaul
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - D Hamilton
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - D Kuk
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - A C Lestrade
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - C Wang
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - T Ditmire
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
| | - B M Hegelich
- Center for High Energy Density Science, C1510, The University of Texas at Austin, Austin, Texas 78712, USA
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Gaul EW, Martinez M, Blakeney J, Jochmann A, Ringuette M, Hammond D, Borger T, Escamilla R, Douglas S, Henderson W, Dyer G, Erlandson A, Cross R, Caird J, Ebbers C, Ditmire T. Demonstration of a 1.1 petawatt laser based on a hybrid optical parametric chirped pulse amplification/mixed Nd:glass amplifier. Appl Opt 2010; 49:1676-1681. [PMID: 20300167 DOI: 10.1364/ao.49.001676] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present the design and performance of the Texas Petawatt Laser, which produces a 186 J 167 fs pulse based on the combination of optical parametric chirped pulse amplification (OPCPA) and mixed Nd:glass amplification. OPCPA provides the majority of the gain and is used to broaden and shape the seed spectrum, while amplification in Nd:glass accounts for >99% of the final pulse energy. Compression is achieved with highly efficient multilayer dielectric gratings.
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Affiliation(s)
- Erhard W Gaul
- Texas Center of High Intensity Laser Science, The University of Texas at Austin, 1 University Station, Mail Stop C1510, Austin, Texas 78712, USA.
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Hays GR, Gaul EW, Martinez MD, Ditmire T. Broad-spectrum neodymium-doped laser glasses for high-energy chirped-pulse amplification. Appl Opt 2007; 46:4813-9. [PMID: 17609731 DOI: 10.1364/ao.46.004813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We have investigated two novel laser glasses in an effort to generate high-energy, broad-spectrum pulses from a chirped-pulse amplification Nd:glass laser. Both glasses have significantly broader spectra (>38 nm FWHM) than currently available Nd:phosphate and Nd:silicate glasses. We present calculations for small signal pulse amplification to simulate spectral gain narrowing. The technique of spectral shaping using mixed-glass architecture with an optical parametric chirped-pulse amplification front end is evaluated. Our modeling shows that amplified pulses with energies exceeding 10 kJ with sufficient bandwidth to achieve 120 fs pulsewidths are achievable with the use of the new laser glasses. With further development of current technologies, a laser system could be scaled to generate one exawatt in peak power.
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Affiliation(s)
- Greg R Hays
- Department of Physics, University of Texas at Austin, 78712, USA.
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Le Blanc SP, Gaul EW, Matlis NH, Rundquist A, Downer MC. Single-shot measurement of temporal phase shifts by frequency-domain holography. Opt Lett 2000; 25:764-766. [PMID: 18064177 DOI: 10.1364/ol.25.000764] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Frequency-domain holography is used to measure ultrafast phase shifts induced either by the nonlinear susceptibility ?(3) of fused silica or by ionization fronts in air over a temporal region of 1 ps with 70-fs resolution in a single shot. The use of an imaging spectrometer adds one-dimensional spatial resolution to the single-shot temporal measurements.
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