Nuclear diagnostics for petawatt experiments (invited)
| العنوان: | Nuclear diagnostics for petawatt experiments (invited) |
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| المؤلفون: | Thomas E. Cowan, Scott Wilks, S. P. Hatchett, Michael D. Perry, R. A. Snavely, E. A. Henry, T. W. Phillips, Michael J. Moran, T. C. Sangster, M. A. Stoyer, M. H. Key, Max Tabak, Deanna Marie Pennington, M. S. Singh, M. D. Cable |
| المصدر: | Review of Scientific Instruments. 72:767-772 |
| بيانات النشر: | AIP Publishing, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Physics, Photofission, Gamma ray, Bremsstrahlung, Nova (laser), Laser science, Laser, law.invention, Nuclear physics, law, Neutron, Atomic physics, Nuclear Experiment, Instrumentation, Inertial confinement fusion |
| الوصف: | With the operation of successively more intense and powerful lasers, such as the NOVA petawatt laser with I∼3×1020 W/cm2, several novel (to laser physics) nuclear diagnostics were used to determine the nature of the laser/matter interaction at the target surface. A broad beam of hot electrons, whose centroid varied from shot to shot, width was remarkably constant, and intensity was about 40% of the incident laser energy was observed. New nuclear phenomenon included photonuclear reactions [e.g., (γ,xn)], photofission of 238U and intense beams of ions. Photonuclear reactions were observed and quantified in Cu, Ni, and Au samples, and produced activation products as neutron deficient as 191Au [a (γ,6n) reaction!], requiring gamma rays exceeding 50 MeV in energy. The spectral features of the gamma-ray source have been investigated by comparing activation ratios in Ni and Au samples, and angular distributions of higher energy photons have been measured with activation of spatially distributed Au samples. Extra... |
| تدمد: | 1089-7623 0034-6748 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::d2ef07ceda65a9f721034943d22b7e9c https://doi.org/10.1063/1.1319355 |
| رقم الأكسشن: | edsair.doi...........d2ef07ceda65a9f721034943d22b7e9c |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Scitation. | تدمد: | 10897623 00346748 |
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