(γ,n) reaction in nuclei of the 12<=A<=238 interval in the intermediate energy region (300 MeV-1000MeV)
Description
The absolute cross section of the 12C(γ,n)11C, 19F(γ,n)18F, 23Na(γ,n)22Na, 31P(γ,n)30P, 52Cr(γ,n)51Cr, 55Mn(γ,n)54Mn, 59Co(γ,n)58Co, 75As(γ,n)74As, 103Rh(γn)102Rh, 127I(γ,n)126I, 197Au(γ,n)196Au and 238U(γ,n)237U reactions were determined, experimentally, in the energy range from 300 MeV to 1000 MeV, using Bremsstrahlung photons. The measured cross sections were compared with results estimated by Monte Carlo Method applied to intranuclear cascades initiated by phothons. A functional dependence between the average value of (γ,n) absolute cross section and the mass number, were established. The (γ,n) absolute cross sections from simple relations, which transparencies of complexe nuclei for mesons and nucleons photo produced were also determined. (M.C.K.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (Portuguese)
As secoes de choque absolutas das reacoes 12C(γ,n)11C,19F (γ,n)18F, 23Na(γ,n)22Na, 31P(γ,n)30P, 52Cr(γ,n)51Cr, 55Mn(γ,n)54Mn(γ,n), 59Co(γ,gn)58Co, 75As(γ,n)74As, 103Rh(γ,n)102Rh, 127I(γ,n)126I, 197Au(γ,n)196Au e 238U(γ,n)237U foram determinadas experimentalmente no intervalo de energia de 300 MeV a 1000 MeV, utilizando fotons de Bremsstrahlung. As secoes de choque medidas foram comparadas com resultados estimados pelo Metodo de Monte Carlo aplicado a cascatas intranucleares iniciadas por fotons. Estabeleceu-se uma dependencia funcional entre o valor medio da secao de choque absoluta (γ,n) e o numero de massa. As secoes de choque absolutas (γ,n) a partir de relacoes simples, nas quais sao utilizadas as transparencias de nucleos complexos para mesons e nucleons fotoproduzidos tambem foram produzidos. (Author)Files
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Additional details
Additional titles
- Original title (Portuguese)
- Reacoes (γ,n) em nucleos no intervalos 12<=A<=238, na regiao de energias intermediarias (300 MeV-1000MeV)
Publishing Information
- Imprint Pagination
- 140 p.
- Report number
- INIS-BR--877
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 18092912
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- BREMSSTRAHLUNG; COMPARATIVE EVALUATIONS; CROSS SECTIONS; GAMMA CASCADES; MASS NUMBER; MEV RANGE 100-1000; MONTE CARLO METHOD; NUCLEI; PHOTONUCLEAR REACTIONS
- Descriptors DEC
- ELECTROMAGNETIC RADIATION; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVALUATION; MEV RANGE; NUCLEAR CASCADES; NUCLEAR REACTIONS; RADIATIONS