Elastic scattering of 0.5 MeV gamma rays by heavy elements

1966 ◽  
Vol 195 (3) ◽  
pp. 252-272 ◽  
Author(s):  
Ulrich Hauser ◽  
Bernd Mussgnug
Keyword(s):  
Elastic Scattering ◽  
Gamma Rays ◽  
Heavy Elements

INELASTIC AND ANOMALOUS ELASTIC SCATTERING OF 88.03 keV GAMMA RAYS

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-835-C9-837
Author(s):  
P. P. KANE ◽  
G. BASAVARAJU ◽  
S. M. LAD ◽  
K. M. VARIER ◽  
L. KISSELL ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Gamma Rays

scholarly journals Elastic Scattering of Alpha-Particles by Heavy Elements

1956 ◽  
Vol 15 (6) ◽  
pp. 545-560 ◽  
Author(s):  
Nobuo Oda ◽  
Kichinosuke Harada
Keyword(s):  
Elastic Scattering ◽  
Alpha Particles ◽  
Heavy Elements

Compton scattering of 1.12-MeV gamma rays byK-shell electrons of heavy elements

1977 ◽  
Vol 15 (5) ◽  
pp. 1976-1983 ◽  
Author(s):  
P. P. Kane ◽  
P. N. Baba Prasad
Keyword(s):  
Compton Scattering ◽  
Gamma Rays ◽  
Heavy Elements

Elastic scattering of 145 keV gamma rays

1978 ◽  
Vol 11 (23) ◽  
pp. 3969-3975 ◽  
Author(s):  
M Satyendra Prasad ◽  
G Kusa Raju ◽  
K Narasimha Murty ◽  
V A Narasimha Murty ◽  
V Lakshminarayana
Keyword(s):  
Elastic Scattering ◽  
Gamma Rays

scholarly journals Hard X-Rays and Gamma-Rays from SN 1987A

1988 ◽  
Vol 108 ◽  
pp. 446-447 ◽  
Author(s):  
M. Itoh ◽  
S. Kumagai ◽  
T. Shigeyama ◽  
K. Nomoto ◽  
J. Nishimura
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Gamma Rays ◽  
Mass Fraction ◽  
Heavy Elements ◽  
X Rays ◽  
X Ray ◽  
Sn 1987A ◽  
Mass Fractions ◽  
Theoretical Predictions

Gamma-rays originating from radioactive decays of 56Ni and 56Co and hard X-rays due to Compton degradation of γ-rays have been predicted to emerge when the supernova becomes sufficiently thin. The X-ray detections by Ginga (Dotani et al. 1988) and Kvant (Sunyaev et al. 1988) and more recent report of γ-ray detections by SMM (Matz et al. 1988) were much earlier than the theoretical predictions. (See Itoh et al. 1987 and references therein.)These observations would give important constraints on the distribution of the heavy elements and 56Co in the ejecta. We adopted the hydrodynamical model 11E1Y6 (Nomoto et al. 1988) and carried out Monte Carlo simulation for photon transfer. A step-like distribution of 56Co was assumed where the mass fraction of 56Co in the layers at Mr ≤ 4.6 M⊙, 4.6 − 6 M⊙, 6 − 8 M⊙, and 8 − 10 M⊙ are XCo = 0.0128, 0.0035, 0.0021, and 0.0011, respectively. Other heavy elements were distributed with mass fractions in proportion to 56Co.

Proton?Capture Gamma Rays from Nitrogen?13

1962 ◽  
Vol 15 (3) ◽  
pp. 443 ◽  
Author(s):  
AW Parker ◽  
GG Shute
Keyword(s):  
Angular Distribution ◽  
Excited State ◽  
Elastic Scattering ◽  
Gamma Rays ◽  
Ground State ◽  
Recent Experiment ◽  
Gamma Ray ◽  
Angular Distributions ◽  
Proton Capture ◽  
Yield Curves

From a recent experiment in this laboratory (Shute et al. 1962) on the elastic scattering of protons from 12C, resonance levels (E13N, J1t) of 13N were obtained at the laboratory bombarding energies (Ep) shown in Table 1. To confirm these results, an investigation of the yield and angular distribution of gamma rays from the reaction 12C(p'YO)13N and 12C(p'Yl)13N was undertaken. Accordingly, the theoretical angular distributions, W(8), for the gamma ray (Yo) to the ground state of 13Na-) and also for the gamma ray (Yl) to the 1st excited state of 13Na+) were evaluated on the assumptions that overlap of levels in 13N is small and lowest order multipoles are involved. As angular distributions are parity insensitive, these were found to be identical for the two gamma rays expected. The simpler of these angular distributions are also shown on the table. The expected angular distributions indicate that 90� is a suitable angle for yield curves.

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