scholarly journals Interaction of fast neutrons with /sup 4/He, /sup 3/He, and /sup 1/H: additional and improved data. [20 MeV, differential cross sections, angular distributions]

1978 ◽  
Author(s):  
M. Drosg
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Angular Distributions ◽  
Fast Neutrons ◽  
Differential Cross Sections

Analysing powers and differential cross sections of (3He,p) reactions on 6Li and 7Li at low energy

1995 ◽  
Vol 73 (1-2) ◽  
pp. 74-84 ◽  
Author(s):  
D. Baddou ◽  
C. Rioux ◽  
R. J. Slobodrian ◽  
J. M. Nelson
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Born Approximation ◽  
Low Energy ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Distorted Wave ◽  
Distorted Wave Born Approximation ◽  
Nucleon Transfer ◽  
Cluster Transfer

Angular distributions of the differential cross sections and analysing powers were measured at an energy of 4.6 MeV. The results are compared with the distorted wave Born approximation predictions for two-nucleon transfer and for a deuteron-cluster transfer. The agreement is qualitative at best, and a discussion of alternatives to improve it is presented.

Angular distributions of the 12C(e,p)e′ reaction at Ee = 200 MeV

1981 ◽  
Vol 59 (2) ◽  
pp. 271-274 ◽  
Author(s):  
G. J. Lolos ◽  
S. Hontzeas ◽  
R. M. Sealock
Keyword(s):  
Electron Energy ◽  
Cross Sections ◽  
Differential Cross ◽  
Proton Energy ◽  
Incident Electron ◽  
Incident Electron Energy ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Good Agreement

Double differential cross sections at six angles ranging from 45° to 143° have been measured for the 12C(e,p)e′ reaction. The proton energy ranged from 15.6 to 17.2 MeV at an incident electron energy of 200 MeV. At the backward angles our results are in good agreement with data reported by Vysotskaya and Afanas'ev but for forward angles the results are lower.

scholarly journals D(d,n)3He Differential Cross Sections from 18 to 26 MeV

1980 ◽  
Vol 33 (2) ◽  
pp. 203 ◽  
Author(s):  
AB Jones
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Broad Level

Angular distributions of the D(d, n)3He reaction have been measured for incident deuteron energies of 18, 20, 22, 24 and 26 MeV. The data provide no evidence for the proposed broad level in 4He at approximately 30 MeV.

scholarly journals Differential Cross Sections for the 13C(3He, p0) and 15N(3He, p0) Reactions at 15 MeV

1975 ◽  
Vol 28 (3) ◽  
pp. 247 ◽  
Author(s):  
J Havloujian ◽  
G Ravalli ◽  
BM Spice
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Optical Model ◽  
Residual Nucleus ◽  
Angular Distributions ◽  
Model Parameters ◽  
Differential Cross Sections ◽  
Channel Parameters ◽  
Free Parameters ◽  
Bombarding Energy

The angular distributions of the ground state proton groups from 3He-induced reactions with 13C and BN targets have been measured at a bombarding energy of 15 MeV. The DWBA program DWUCK has been used to fit the differential cross sections with no free parameters. The optical model parameters for the proton-residual nucleus channel were taken from the literature, and the 3He-target nucleus channel parameters were obtained by fitting the 3He elastic scattering differential cross sections.

Electroproduction of low energy π+ from 3He

1982 ◽  
Vol 60 (9) ◽  
pp. 1257-1260
Author(s):  
R. M. Sealock ◽  
H. S. Caplan ◽  
B. W. Zulkoskey ◽  
A. Szyjewicz ◽  
E. L. Tomusiak
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Incident Energy ◽  
Pion Production ◽  
Low Energy ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Channel Calculation ◽  
Good Agreement

Differential cross sections were measured for the electro-pion production from H and 3He at an incident energy of 200 MeV and pion energies from 7.3 to 12.1 MeV. Pion-angular distributions are presented and compared with theory. For hydrogen there is good agreement. A simple three-channel calculation performed for the pion production from 3He was found to overestimate the cross section at forward pion angles.

scholarly journals Absolute Double Differential Cross Sections of Bremsstrahlung Produced from 4.0 keV Electrons Incident on Free Ar Atoms

Atoms ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 72
Author(s):  
Suman Prajapati ◽  
Bhupendra Singh ◽  
Sunil Kumar ◽  
Bhartendu Kumar Singh ◽  
C. A. Quarles ◽  
...  
Keyword(s):  
Satisfactory Agreement ◽  
Photon Energy ◽  
Cross Sections ◽  
Differential Cross ◽  
Thick Target ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Model Calculations ◽  
Detection Range ◽  
Set Up

New results are reported on the measurements of absolute double differential cross sections (DDCSs) of bremsstrahlung produced from 4.0 keV electrons incident on free Ar atoms in the angular detection range of 45°–120°. A significant reduction of the thick target bremsstrahlung (TTB) of the chamber wall and of the photon transmission windows has been achieved by modifying the experimental set-up used previously; a large reduction of TTB in the present experiments is supported by the results of our model calculations for the ratio of TTB background to the normal bremsstrahlung (NB) spectrum carried out for the employed geometry of the experimental set-up. The results of photon energy distribution measured at different angles and those of angular distributions of photons of a given energy are compared with theoretical predictions of Kissel–Quarles–Pratt (KQP) theory for ordinary bremsstrahlung and with predictions of total bremsstrahlung including polarization bremsstrahlung (PBS) of the stripping approximation (SA). A satisfactory agreement observed between experiment and predictions using SA theory for absolute DDCSs of bremsstrahlung provides evidence for an appreciable contribution of polarization bremsstrahlung at the considered impact energy of electrons on one hand, while on the other hand, it exhibits a large discrepancy (about a factor of 2) in DDCSs of bremsstrahlung photons obtained by experiment and by KQP theory for photon energy distributions at all detection angles measured in these experiments. In addition, present results of the angular dependence of photons of different energies show anisotropic distributions and they are found to be in reasonable agreement with both KQP and SA theories. The satisfactory agreement between experiment and theory for angular distributions is an indication of a significant reduction of the background produced from TTB photons.

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