Pre-equilibrium dipole excitation and γ-ray fragment angular correlation in the 32S +74Ge reaction

1999 ◽  
Vol 6 (3) ◽  
pp. 275-288 ◽  
Author(s):  
M. Sandoli ◽  
A. Boiano ◽  
L. Campajola ◽  
A. De Rosa ◽  
A. D'Onofrio ◽  
...  
Keyword(s):  
Angular Correlation ◽  
Dipole Excitation ◽  
Γ Ray

Perturbation of γ-ray angular correlation by an Ornstein-Ulhenbeck process

1992 ◽  
Vol 45 (9) ◽  
pp. 4745-4751 ◽  
Author(s):  
A. K. Dhara ◽  
S. K. Das
Keyword(s):  
Angular Correlation ◽  
Γ Ray

STUDIES IN THE DECAY OF THE ACTIVE DEPOSIT OF ACTINIUM: I. ALPHA–GAMMA ANGULAR CORRELATION IN THE DECAY OF Bi211 (AcC)

1964 ◽  
Vol 42 (9) ◽  
pp. 1798-1812 ◽  
Author(s):  
C. R. Cothern ◽  
R. D. Connor
Keyword(s):  
Shell Model ◽  
Angular Correlation ◽  
Angular Momenta ◽  
Mixing Parameters ◽  
Isotropic Distribution ◽  
Model Predictions ◽  
Γ Ray ◽  
Polarization Correlation ◽  
Do So ◽  
Isotropy Condition

The α–γ angular correlation of the cascade Bi211(α, 6.27 MeV)Tl207*(γ, 350 keV)Tl207 has been found to be isotropic to within [Formula: see text].Accepting the spin and parity of the ground state of Tl207as 1/2+, a search was made for all reasonable spins and angular momenta, pure and mixed, which could yield an isotropic correlation. Shell-model predictions and other situations have been examined. No case of unmixed α-, unmixed γ-angular momenta satisfies the isotropy condition. Many other cases are found which do so, but only with the spin and parity of the excited state of Tl207 taken as 3/2+. It has been shown that 5/2+ does not yield an isotropic correlation. With one radiation mixed and the other pure, there are eight possible combinations which fit the observations. With both radiations mixed, there is an infinity of combinations of the two mixing parameters which lead to an isotropic distribution. The αk value of the 350-keV transition (0.175 ± 0.017) shows the γ ray in question to be 76% M1 and 24% E2. The present work is consistent with only one of the two possibilities given by Gorodetzky et al. (1962) from polarization–correlation work. Accepting this additional evidence it would appear that the most plausible interpretation is that of shell-model spins and parities with both radiations mixed, α—(λ = 3, 5), γ—(76% M1, 24% E2).

NEUTRON-CAPTURE γ-RAY STUDIES IN 50Cr(n, γ)51Cr

1966 ◽  
Vol 44 (9) ◽  
pp. 2111-2130 ◽  
Author(s):  
G. A. Bartholomew ◽  
E. D. Earle ◽  
M. R. Gunye
Keyword(s):  
Angular Correlation ◽  
Neutron Capture ◽  
Decay Scheme ◽  
Γ Ray ◽  
Correlation Techniques

Level energies and details of the γ-ray decay scheme in 51Cr are determined by Ge(Li) spectrometer and angular correlation techniques. Spin 3/2 is assigned to levels at 0.748, 1.898, 2.893, 3.125, and 3.769 MeV. A level at 776 keV, for which spin 1/2– is favored, may account for the anomalous lifetime previously reported for the 748-keV γ ray in 51Cr.

The statistical analysis of γ-ray angular correlation experiments

1974 ◽  
Vol 115 (1) ◽  
pp. 105-113 ◽  
Author(s):  
A.N. James ◽  
P.J. Twin ◽  
P.A. Butler
Keyword(s):  
Statistical Analysis ◽  
Angular Correlation ◽  
Γ Ray

Particle-γ-Ray Angular-Correlation Study ofNi57in the ReactionNi58(He3,αγ)Ni57

1969 ◽  
Vol 188 (4) ◽  
pp. 1792-1801 ◽  
Author(s):  
C. R. GOULD ◽  
D. P. BALAMUTH ◽  
P. F. HINRICHSEN ◽  
R. W. ZURMÜHLE
Keyword(s):  
Angular Correlation ◽  
Correlation Study ◽  
Γ Ray

γ–γ ANGULAR CORRELATION MEASUREMENTS OF THERMAL-NEUTRON-CAPTURE γ RAYS IN 53Cr AND 54Cr

1965 ◽  
Vol 43 (6) ◽  
pp. 1128-1156 ◽  
Author(s):  
G. A. Bartholomew ◽  
M. R. Gunye
Keyword(s):  
Thermal Neutron ◽  
Angular Correlation ◽  
Neutron Capture ◽  
Branching Ratios ◽  
Thermal Neutron Capture ◽  
Γ Rays ◽  
Γ Ray ◽  
Made In

Coincidence and angular correlation measurements have been made on γ rays following thermal-neutron capture in separated targets of 52Cr and 53Cr. The following spin assignments are made in 53Cr: 0.563-, 2.32-, 2.71-, and 3.62-MeV levels, 1/2, 3/2, 1/2, and (3/2) respectively, and in 54Cr: 2.63-, 2.84-, 3.08-, 3.73-, 4.91-, and 5.30-MeV levels, 2,(0)2, 2, 1 or 2, 1 or 2, and 1, 2, or 3 respectively. Details of the decay schemes, branching ratios, and γ-ray multipole mixtures are given also.

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