scholarly journals Deuteron Capture by Deuterons and the Structure of 4He

1962 ◽  
Vol 15 (1) ◽  
pp. 59 ◽  
Author(s):  
LM Delves

The four-body scattering matrix describing the various scattering states of two protons and two neutrons is analysed to see what information can be gained on the structure of the bound state, 4He. It is found that an estimate can be given of the fraction of time that 'He appears as two deuterons; this estimate is� in turn used to calculate the cross sections for the process d(d, y)'He. The low energy n-3He singlet elastic scattering parameters appear to be fairly well determined by the data studied.

1969 ◽  
Vol 47 (10) ◽  
pp. 1723-1729 ◽  
Author(s):  
A. Dalgarno

A summary is presented of the processes by which low energy electrons lose energy in moving through the atmosphere and estimates are given of the cross sections and energy loss rates. The mechanisms by which thermal electrons cool are described and the cooling efficiencies are listed.


2019 ◽  
Vol 28 (06) ◽  
pp. 1950038 ◽  
Author(s):  
Suprita Chakraborty ◽  
Avijit Mukherjee ◽  
Subinit Roy

The radiative capture reaction [Formula: see text] is analyzed using a hybrid model approach where the non-resonant component has been constructed employing the potential model with a folded M3Y potential. The one-level Breit–Wigner formula has been used to estimate the cross-sections of the resonant decays of dominant ([Formula: see text]) state of [Formula: see text]N at 8.06[Formula: see text]MeV. The contribution of the broad resonance at 8.77[Formula: see text]MeV ([Formula: see text]) has been dealt with differently. While Breit–Wigner formula has been used where the excitation function data exist, the [Formula: see text]-matrix prediction for the cross-section of decay to a bound state of [Formula: see text]N from the broad resonance has been used where excitation function data are not available. The single particle spectroscopic factors for ground and six excited states of [Formula: see text]N have been obtained from the fits. The resulting astrophysical [Formula: see text]-factor at zero relative energy is [Formula: see text][Formula: see text]keV b. The value is in good agreement with the previously reported [Formula: see text]-matrix result and also consistent within error bars with the published values.


1995 ◽  
Vol 28 (18) ◽  
pp. 4141-4148 ◽  
Author(s):  
G Woste ◽  
C J Noble ◽  
K Higgins ◽  
P G Burke ◽  
M J Brunger ◽  
...  

1973 ◽  
Vol 51 (20) ◽  
pp. 2197-2201 ◽  
Author(s):  
P. W. Martin ◽  
R. McFadden ◽  
B. L. White

The differential cross sections for 4.3 MeV neutrons elastically scattered from natural samples of U, Bi, and Pb have been measured at laboratory angles of 5, 10, and 15°. In the case of uranium, the data are consistent with calculations based on the nuclear optical model and known electromagnetic interactions. Less satisfactory agreement to the data is obtained in the cross section measurements for lead and bismuth.


1992 ◽  
Vol 70 (5) ◽  
pp. 305-310 ◽  
Author(s):  
Y. Frongillo ◽  
B. Plenkiewicz ◽  
P. Plenkiewicz ◽  
J.-P. Jay-Gerin

Pseudopotential calculations of phase shifts, differential, total, and momentum-transfer cross sections for electrons elastically scattered from neon atoms are reported in the impact energy range 0–20 eV. The results are found to be in very good agreement with existing experimental and other theoretical data.


2003 ◽  
Vol 18 (02n06) ◽  
pp. 440-443 ◽  
Author(s):  
A. TAMII ◽  
N. UCHIGASHIMA ◽  
H. SAKAI ◽  
M. HATANO ◽  
Y. MAEDA ◽  
...  

The cross sections and spin observables of the p+d elastic scattering have been measured at 392 MeV. The results are compared with the results of Faddeev calculations with and without including the three nucleon force.


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