Experimentalgfactors andB(E2)values of21+,41+,22+, and31−states inZn64andZn68compared to shell model predictions

2005 ◽  
Vol 71 (3) ◽  
Author(s):  
J. Leske ◽  
K.-H. Speidel ◽  
S. Schielke ◽  
O. Kenn ◽  
D. Hohn ◽  
...  
Keyword(s):  
Shell Model ◽  
Model Predictions

Spectroscopic Study of 32S Through the 31P(d,n)32S Reaction

1974 ◽  
Vol 52 (14) ◽  
pp. 1288-1294 ◽  
Author(s):  
A. H. Hussein ◽  
G. C. Neilson ◽  
W. J. McDonald ◽  
W. K. Dawson
Keyword(s):  
Spectroscopic Study ◽  
Shell Model ◽  
Cross Sections ◽  
Differential Cross ◽  
Time Of Flight ◽  
Angular Distributions ◽  
Absolute Differential ◽  
Spectroscopic Factors ◽  
Model Predictions ◽  
Theoretical Predictions

The 31P(d,n)32S reaction has been studied at deuteron energies of 4.0 and 5.45 MeV. Neutron energies were measured by time of flight. Absolute differential cross sections of seven levels in 32S have been measured and compared with the theoretical predictions of both the DWBA and compound statistical theories. Analysis of the angular distributions yielded lP values and absolute spectroscopic factors. These results have been compared with those from other experiments and shell model predictions.

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).

Shell-model predictions for electromagnetic properties ofN=50nuclei

1988 ◽  
Vol 38 (6) ◽  
pp. 2849-2859 ◽  
Author(s):  
Xiangdong Ji ◽  
B. H. Wildenthal
Keyword(s):  
Shell Model ◽  
Electromagnetic Properties ◽  
Model Predictions

Shell model predictions for19N(β−)19O

1988 ◽  
Vol 38 (2) ◽  
pp. 935-939 ◽  
Author(s):  
E. K. Warburton
Keyword(s):  
Shell Model ◽  
Model Predictions

An Investigation of Odd Parity States in 32S

1974 ◽  
Vol 52 (11) ◽  
pp. 950-958 ◽  
Author(s):  
H. Grawe ◽  
J. E. Cairns ◽  
M. W. Greene ◽  
J. A. Kuehner
Keyword(s):  
Shell Model ◽  
Excited States ◽  
Linear Polarization ◽  
Doppler Shift ◽  
Polarization Measurement ◽  
Angular Distributions ◽  
Resonance States ◽  
Mixing Ratios ◽  
Model Predictions

States in 32S have been populated using the 31P(p,γ) reaction at the Ep = 895, 1438, and 1583 keV resonances. Angular distributions, a linear polarization measurement, and the results from the 32S(α,α′) reaction at 180° yielded the following spin and/or parity assignments for bound levels Jπ(6.62) = 4−, Jπ(6.76) = 3−, 4+, 5−, Jπ(6.85) = 3−, 4+, and Jπ(7.95) = 3, 4, 5−, and for resonance states J(10.26) = 4 and J(10.40) = 4. The γ decay of selected excited states has been studied and mixing ratios were obtained for the strongest branches. Doppler shift measurements yielded lifetimes of 810 (−250, +350) fs, > 300 fs and 110 (−40, +60) fs for the states at 6.62, 6.76, and 7.95 MeV respectively. The results are discussed and compared with shell model predictions.

Radiative Width of the 6+ Level in 20Ne at 8.78 MeV

1971 ◽  
Vol 49 (11) ◽  
pp. 1397-1400 ◽  
Author(s):  
D. W. O. Rogers ◽  
J. H. Aitken ◽  
A. E. Litherland ◽  
W. R. Dixon ◽  
R. S. Storey
Keyword(s):  
Shell Model ◽  
Transition Strength ◽  
Radiative Width ◽  
Model Predictions

The radiative width of the 6+ resonance at Eα = 5.06 MeV in the 16O(α, γ)20Ne reaction has been measured to be ωγ = 1.30 ± 0.20 eV corresponding to a transition strength of 20 ± 3 W.u. for the 6+ to 4+ transition in 20Ne. Comparison is made to rotational and shell model predictions.

Shell-model predictions of alpha-spectroscopic factors between ground states of 16 ⩽ A ⩽ 40 nuclei

1978 ◽  
Vol 79 (4-5) ◽  
pp. 381-384 ◽  
Author(s):  
W. Chung ◽  
J. van Hienen ◽  
B.H. Wildenthal ◽  
C.L. Bennett
Keyword(s):  
Shell Model ◽  
Ground States ◽  
Spectroscopic Factors ◽  
Model Predictions

Cluster states in 13C

2006 ◽  
Vol 21 (31n33) ◽  
pp. 2393-2401 ◽  
Author(s):  
Y. Sasamoto ◽  
T. Kawabata ◽  
T. Uesaka ◽  
K. Suda ◽  
Y. Maeda ◽  
...  
Keyword(s):  
Shell Model ◽  
Cross Sections ◽  
Cluster Structure ◽  
Quadrupole Transition ◽  
Cluster States ◽  
Model Predictions

Cross sections for 13 C (α,α′) reactions at Eα = 400 MeV have been measured to obtain the monopole and quadrupole transition strengths. The excitation strengths are compared with the shell-model predictions. It is suggested that the large monopole strengths observed for the [Formula: see text] and [Formula: see text] states in 13 C are attributed to the cluster structure of those states.

scholarly journals Level density of the sd-nuclei—Statistical shell-model predictions

2018 ◽  
Vol 120 ◽  
pp. 1-120 ◽  
Author(s):  
S. Karampagia ◽  
R.A. Senkov ◽  
V. Zelevinsky
Keyword(s):  
Shell Model ◽  
Level Density ◽  
Model Predictions
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