Polarisation et mesures de section efficace dans la réaction 9Be(3He, p)11B

1983 ◽  
Vol 61 (12) ◽  
pp. 1609-1612 ◽  
Author(s):  
J. Pouliot ◽  
R. Roy ◽  
P. Bricault ◽  
L. Potvin ◽  
R. J. Slobodrian
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Incident Energy ◽  
Section Efficace ◽  
Proton Polarization ◽  
Analyzing Powers ◽  
Nonuniform Illumination ◽  
Precise Knowledge ◽  
Correct Calculation

New measurements of the differential cross section have been carried out in the reaction 9Be(3He, p)11B between 13.0- and 14.2-MeV incident energy. In order to compute the effective analyzing powers of polarimeters used to measure proton polarization in the same reaction, a precise knowledge of angular variations is necessary. The achieved accuracy allows a correct calculation of the false asymmetry caused by nonuniform illumination of the analyser from cross section variations.

scholarly journals The scattering of alpha particles by helium

1959 ◽  
Vol 251 (1265) ◽  
pp. 143-155 ◽  
Keyword(s):  
Elastic Scattering ◽  
Phase Shift ◽  
Differential Cross Section ◽  
Excitation Energy ◽  
Cross Section ◽  
Differential Cross ◽  
Incident Energy ◽  
Phase Shifts ◽  
Alpha Particles

In order to obtain information about the levels of even spin and parity of 8 Be at energies above 11 MeV, the differential cross-section for the α-particle-helium elastic scattering has been measured at a series of beam energies from 23·1 to 38·4 MeV, for many c.m.s. angles between 30 and 90°. Phase shifts up to L = 8 have been calculated for each energy. Combining these results with previous figures for lower energies, the phase shifts δ 0 , δ 2 and δ 4 are thus known as functions of incident energy from 0·15 MeV to 38·4 MeV. The behaviour of the phase shift δ 4 confirms the existence of a previously suggested level with I = 4 at an excitation energy of about 11·4 MeV in 8 Be. The phase shifts δ 6 and δ 8 are small, as expected if the rotational series of levels in 8 Be term inates with I = 4.

Proton polarization and differential cross section for the (3He, p) reaction on 6Li and 9Be at 14 MeV

1977 ◽  
Vol 286 (3) ◽  
pp. 483-493 ◽  
Author(s):  
M. Irshad ◽  
C. Rioux ◽  
J. Asai ◽  
R. Pigeon ◽  
R.J. Slobodrian
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Proton Polarization

Recoil Proton Polarization and Differential Cross Section in Eta-Meson Photoproduction at 890 MeV

1974 ◽  
Vol 36 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Kumataro Ukai ◽  
Ichita Endo ◽  
Katsuhide Yoshida ◽  
Masamichi Hongoh ◽  
Ken Kikuchi ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Recoil Proton ◽  
Eta Meson ◽  
Meson Photoproduction ◽  
Proton Polarization

scholarly journals PHOTODISINTEGRATION OF ALIGNED DEUTERONS AT ASTROPHYSICAL ENERGIES USING LINEARLY POLARIZED PHOTONS

2013 ◽  
Vol 22 (05) ◽  
pp. 1350030
Author(s):  
S. P. SHILPASHREE ◽  
SWARNAMALA SIRSI ◽  
G. RAMACHANDRAN
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Polar Angle ◽  
University Of Virginia ◽  
Analyzing Powers ◽  
Linearly Polarized ◽  
Γ Rays ◽  
Model Independent ◽  
Polarized Photons

Following the model independent approach to deuteron photodisintegration with linearly polarized γ-rays, we show that the measurements of the tensor analyzing powers on aligned deuterons along with the differential cross-section involve five different linear combinations of the isovector [Formula: see text]; j = 0, 1, 2 amplitudes interfering with the isoscalar M1s and E2s amplitudes. This is of current interest in view of the recent experimental finding [M. A. Blackston et al., Phys. Rev. C78 (2008) 034003] that the three [Formula: see text] amplitudes are distinct and also the reported experimental observation [B. D. Sawatzky, Ph.D. thesis, University of Virginia (2005)] on the front–back (polar angle) asymmetry in the differential cross-section.

Differential cross section and analyzing powers for the reaction in the Δ-resonance region

1987 ◽  
Vol 472 (4) ◽  
pp. 718-732 ◽  
Author(s):  
J.M. Cameron ◽  
P. Kitching ◽  
J. Pasos ◽  
J. Thekkumthala ◽  
R. Abegg ◽  
...  
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Resonance Region ◽  
Analyzing Powers
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