کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8083598 | 1521699 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A tabletop, ultrashort pulse photoneutron source driven by electrons from laser wakefield acceleration
ترجمه فارسی عنوان
منبع پدیده فوتونوترون نازک، الکترونیکی از شتاب دهنده یک لیزر است
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
چکیده انگلیسی
Relativistic electron beams driven by laser wakefield acceleration were utilized to produce ultrashort neutron sources. The experiment was carried out on the 38 fs, â¼0.5 J, 800 nm Ti:Sapphire laser in the 10 TW UT3 laser lab at University of Texas at Austin. The target gas was a high density pulsed gas jet composed of 90% He and 10% N2. The laser pulse with a peak intensity of 1.5 Ã 1018 W/cm2 interacted with the target to create a cylindrical plasma channel of 60 μm radius (FWHM) and 1.5 mm length (FWHM). Electron beams of â¼80 pC with the Gaussian energy distribution centered at 37 MeV and a width of 30 MeV (FWHM) were produced via laser wakefield acceleration. Neutron fluences of â¼2.4 Ã 106 per shot with hundreds of ps temporal length were generated through bremsstrahlung and subsequent photoneutron reactions in a 26.6 mm thick tungsten converter. Results were compared with those of simulations using EPOCH and GEANT4, showing agreement in electron spectrum, neutron fluence, neutron angular distribution and conversion rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Matter and Radiation at Extremes - Volume 2, Issue 6, November 2017, Pages 296-302
Journal: Matter and Radiation at Extremes - Volume 2, Issue 6, November 2017, Pages 296-302
نویسندگان
X.J. Jiao, J.M. Shaw, T. Wang, X.M. Wang, H. Tsai, P. Poth, I. Pomerantz, L.A. Labun, T. Toncian, M.C. Downer, B.M. Hegelich,