Differential cross sections for the elastic scattering of electrons by helium atoms

1971 ◽  
Vol 4 (2) ◽  
pp. 208-214 ◽  
Author(s):  
S P Khare ◽  
P Shobha
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections ◽  
Helium Atoms

Differential cross sections and analyzing powers for pd elastic scattering below 1.0 MeV

1983 ◽  
Vol 406 (3) ◽  
pp. 435-442 ◽  
Author(s):  
E. Huttel ◽  
W. Arnold ◽  
H. Berg ◽  
H.H. Krause ◽  
J. Ulbricht ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Differential Cross Sections ◽  
Analyzing Powers

The elastic scattering of fast electrons and positrons by hydrogen and helium atoms

1959 ◽  
Vol 250 (1262) ◽  
pp. 337-345 ◽  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Born Approximation ◽  
Logarithmic Singularity ◽  
Hydrogen Atoms ◽  
Fast Electrons ◽  
Helium Atoms ◽  
Electrons And Positrons ◽  
Angle Scattering

A simplification of the second Born approximation due to Massey & Mohr is used to calculate the differential cross-sections for the elastic scattering of fast electrons and fast positrons by hydrogen atoms and helium atoms, the method of Dalitz being applied to evaluate all the relevant integrals. Although the logarithmic singularity which is found in the differential cross-section for zero-angle scattering is shown to be absent in the true second Born approximation the use of the simplification of this approximation is justified at sufficiently high impact energies provided the angle of scattering is not too small. The results of the calculations for incident electrons in helium are compared with the available experimental data.

Measurements of differential cross sections and polarization effects in pion-proton elastic scattering in the momentum range 875 to 1579 MeV/ c

1966 ◽  
Vol 289 (1419) ◽  
pp. 449-462 ◽  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Pulse Height ◽  
Magnetic Core ◽  
Differential Cross Sections ◽  
Liquid Hydrogen Target ◽  
Hydrogen Target ◽  
Momentum Range ◽  
Polarization Effects

In this paper we discuss some measurements that have been made at Nimrod of differential cross sections and polarization effects in πp elastic scattering. The principal aims of this work were to determine the spins and parities of the N * 1/2 (1688) and the N* 3/2 (1920) isobars and to examine the behaviour of the π+p elastic scattering cross section at momenta around 950MeV/ c where a shoulder exists in the total cross sections. Table 1 gives the values of the momenta at which the measurements were made and figure 1 illustrates their relation to other work that has been done in or near this region. A schematic diagram of the experimental arrangement for measuring the differential cross sections is shown in figure 2. An array of scintillation counters, used in conjunction with a coincidence matrix detected particles scattered from a 4 in. long liquid hydrogen target. All events were accepted in which two and only two outgoing particles were detected in coincidence by any combination of two counters on opposite sides of the beam. The number of counts for each combination was stored in the magnetic core store of a 512 channel pulse height analyser

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