Inelastic electron scattering from the 13 MeV region in oxygen-16

1970 ◽  
Vol 48 (1) ◽  
pp. 83-93 ◽  
Author(s):  
J. C. Kim ◽  
R. P. Singhal ◽  
H. S. Caplan

The cross section for the inelastic scattering of electrons from 16O was measured at excitation energies between 11.5 and 13.25 MeV and momentum transfers between 0.45 and 0.9 fm−1. This momentum transfer range bridges the gap between the previous high momentum transfer data of Bishop et al. and the low momentum transfer data of Stroetzel. The odd parity states are compared with the particle–hole predictions generated from Gillet's wave functions. The generalized Helm model fits the 11.5 MeV (2+) level fairly well. An upper limit is set on the excitation of the magnetic monopole (0−) level at 12.70 MeV.

1973 ◽  
Vol 51 (20) ◽  
pp. 2125-2137 ◽  
Author(s):  
R. P. Singhal ◽  
H. S. Caplan ◽  
J. R. Moreira ◽  
T. E. Drake

The scattering of electrons from the low lying excited states of 20Ne and 22Ne has been studied in the momentum transfer range from 0.41 fm−1 to 1.04 fm−1. Over a limited range of momentum transfer the study of 20Ne has been extended to excited states up to 8 MeV. A phase shift code has been used to extract the ground state transition probabilities of the states observed. The model dependence of the results is investigated. The experimental results have been compared with the predictions of the Nilsson and the alpha-particle model.


1971 ◽  
Vol 49 (22) ◽  
pp. 2743-2753 ◽  
Author(s):  
J. L. Groh ◽  
R. P. Singhal ◽  
H. S. Caplan ◽  
B. S. Dolbilkin

The inelastic electron scattering cross sections for the excitation of the levels in 18O lying below 6.0 MeV have been measured in the momentum transfer range 0.5 < q < 1.0 fm−1. Excitation of the following T = 1 levels was observed: 1.98 MeV (2+), 3.63 MeV (0+), 3.92 MeV (2+), 4.45 MeV (1−), 5.09 MeV (3−), 5.25 MeV (2+), and 5.33 MeV (0+). Estimates of transition probabilities to the ground state have been made through a parameterization of the data using the generalized Helm model. Longitudinal form factors calculated from the wave functions of Benson and Irvine show excellent agreement with the experimental form factors.


Author(s):  
A. Yu. Igumenov ◽  
A. S. Parshin ◽  
V. O. Kanzychakova ◽  
A. M. Demin ◽  
T. A. Andryushchenko ◽  
...  

2015 ◽  
Vol 49 (4) ◽  
pp. 423-427 ◽  
Author(s):  
A. S. Parshin ◽  
A. Yu. Igumenov ◽  
Yu. L. Mikhlin ◽  
O. P. Pchelyakov ◽  
A. I. Nikiforov ◽  
...  

1979 ◽  
Vol 323 (1) ◽  
pp. 13-25 ◽  
Author(s):  
R. Schneider ◽  
A. Richter ◽  
A. Schwierczinski ◽  
E. Spamer ◽  
O. Titze ◽  
...  

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