Integral cross sections of photonuclear reactions near the giant dipole resonance

Atomic Energy ◽  
2000 ◽  
Vol 88 (5) ◽  
pp. 408-413 ◽  
Author(s):  
A. G. Belov ◽  
Yu. P. Gangrskii ◽  
K. K. Gudima ◽  
P. Zuzaan
Keyword(s):  
Cross Sections ◽  
Giant Dipole Resonance ◽  
Photonuclear Reactions ◽  
Dipole Resonance

The (g, p) and (g, n) Reactions in Molybdenum

1968 ◽  
Vol 21 (5) ◽  
pp. 765 ◽  
Author(s):  
RW Gellie
Keyword(s):  
Activation Analysis ◽  
Cross Sections ◽  
Giant Dipole Resonance ◽  
Dipole Resonance ◽  
Isospin Splitting ◽  
The Cross ◽  
Medium Weight ◽  
Residual Activation

Measurements have been made of the cross sections for some of the (g,p) and (y, n) reactions in molybdenum using the technique of residual activation analysis. The gross structure of these cross sections is compared with previous measurements and the results are interpreted as evidence for the isospin splitting of the giant dipole resonance in medium weight nuclei.

scholarly journals Energy dependence of exotic nuclei production cross sections by photofission reaction in GDR range

2016 ◽  
Vol 94 (2) ◽  
pp. 243-248 ◽  
Author(s):  
Debasis Bhowmick ◽  
F.A. Khan ◽  
Debasis Atta ◽  
D.N. Basu ◽  
Alok Chakrabarti
Keyword(s):  
Charge Distribution ◽  
Cross Sections ◽  
Giant Dipole Resonance ◽  
Production Cross ◽  
Nuclear Excitation ◽  
Excitation Energies ◽  
Mass Distributions ◽  
Gdr Region ◽  
Dipole Resonance ◽  
Average Photon Energy

Photofission of actinides is studied in the region of nuclear excitation energies that covers the entire giant dipole resonance (GDR) region. The mass distributions of 238U photofission fragments have been explored theoretically for eight different endpoint bremsstrahlung energies from 11.5 to 67.7 MeV, which correspond to average photon energies of 9.09 to 15.90 MeV. Among these energies, 29.1 MeV corresponds to the average photon energy of 13.7 ± 0.3 MeV, which coincides with the GDR peak for 238U photofission. The integrated yield of 238U photofission, as well as charge distribution of photofission products, is calculated and its role in producing nuclei and their neutron-richness is investigated.

(γ, p) cross sections and isospin splitting of the giant dipole resonance in N = 50 nuclei

1975 ◽  
Vol 239 (3) ◽  
pp. 397-411 ◽  
Author(s):  
K. Shoda ◽  
H. Miyase ◽  
M. Sugawara ◽  
T. Saito ◽  
S. Oikawa ◽  
...  
Keyword(s):  
Cross Sections ◽  
Giant Dipole Resonance ◽  
Dipole Resonance ◽  
Isospin Splitting

scholarly journals Direct Photodisintegration of 13C below 17 MeV. Reaction 13C(γ,n) 12C

1969 ◽  
Vol 24 (9) ◽  
pp. 1361-1364 ◽  
Author(s):  
Terje Aurdal
Keyword(s):  
Cross Sections ◽  
Single Particle ◽  
Giant Dipole Resonance ◽  
Valence Neutron ◽  
Nuclear Model ◽  
Final States ◽  
Dipole Resonance

A nuclear model where the single-particle states of the valence neutron are vector coupled to the ground (0+) and first excited (2+) 12C-core states, is considered. The model is applied to calculate total photodisintegration cross sections of the reaction 13C(γ, n)12C for energies below the Giant dipole resonance. The radial wavefunctions in initial- as well as final states are of the Saxon-Woods type.

Giant dipole resonance in 4He

1980 ◽  
Vol 58 (11) ◽  
pp. 1555-1559 ◽  
Author(s):  
J. J. Bevelacqua
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Giant Dipole Resonance ◽  
Reasonable Agreement ◽  
Center Of Mass ◽  
Nucleon Nucleon ◽  
Nucleon Interaction ◽  
R Matrix ◽  
Dipole Resonance ◽  
Nucleon Nucleon Interaction

The 4He giant dipole resonance is calculated with the generalized R-matrix method of Lane and Robson. The model treats the center of mass correctly and includes noncentral components in the nucleon–nucleon interaction via the Sussex interaction. The 4He(γ,p)3H and 4He(γ,n)3He cross sections are sensitive to the 4He level spectrum, but are in reasonable agreement with the photonuclear data for level schemes which agree with the spectrum suggested by Fiarman and Meyerhof (FM). Other spectra which bracket the FM levels lead to poorer photonuclear cross sections. R-matrix model results also lead to a (γ,p)/(γ,n) cross section ratio which is about unity.

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