Proton-Proton Scattering from 1.4 to 2.4 Mev

Abstract

Differential cross sections for the scattering of protons by protons have been measured at energies of 1.397, 1.855, and 2.425 Mev over an angular range from 12° to 90° in the center-of-mass system. Total uncertainties vary from about ±0.1% at large angles to ±0.3% at the smallest angles. A thorough investigation of sources of error has yielded cross-section values in disagreement with previously published values. A simple phaseshift analysis has been made. Without the inclusion of vacuum polarization contributions, a satisfactory fit is not obtained with only S-wave and effective nuclear P-wave phase shifts. With their inclusion, the data are fitted well by pure 5-wave nuclear scattering. An upper limit on the magnitude of the effective nuclear P-wave phase shift is estimated at about 0.02° at these energies.

Proton-Proton Elastic Scattering between 6 and 10 MeV

“…The measurement of precise arigular distributions between 4 proton beam, accelerated as H2 ions. The reason for th is was twofold: slit + scattered H2 ions result in free protons that are not focused by the beam transport system, and thus slit effects are minimized.…”

Development of a 2D digital proton–proton scattering technique for hydrogen depth profiling

“…In the forward direction, the pp-scattering cross-section is almost constant up to the angle of 15 . 15 The sensitivity of the technique is influenced by the below factors:…”

“… where is proportional to the integrated peak content, is pp‐scattering cross‐section, is the number of incident protons, represents the coincidence detection efficiency, and is the solid angle covered by only one detector because the particles scattered from the sample are identical. In the forward direction, the pp‐scattering cross‐section is almost constant up to the angle of 15° 15 …”

Test of detailed balance in the reaction ¹⁶O(d, α)¹⁴N and its inverse

“…since 1939, very accurate p-p elastic scattering cross section measurements have been performed (Herb, et al, 1939;Worthington, et al, 1953;and Knecht, et al, 1959). The methods and principles used in the present experiment closely resemble those of the p-p scattering experiments, and many of the details are contained in the theses of Worthington (1952), McGruer (1951), Findley (1951), Knecht (1958), Berners (1957), and Northcliffe (1957) --all from the University of Wiscom;in.…”