Photoproduction ofπ0Mesons fromHe3with 340-MeV Bremsstrahlung
- 20 July 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 183 (4), 873-879
- https://doi.org/10.1103/physrev.183.873
Abstract
Differential cross sections for the coherent photoproduction of mesons from were measured for recoil angles of 20°, 30°, 40°, and 50° and were found to be 2-8 μb/sr, 5-25 μb/sr, 17-56 μb/sr, and 17-84 μb/sr, respectively. A gaseous target at 20.4°K was irradiated by 340-MeV bremsstrahlung, and recoils were observed with silicon semiconductor detectors. At least one ray from the pion decay was detected with a photon shower counter. A coincidence triggered an oscilloscope on which all pulses were displayed and photographed. The experimental cross sections are compared with those obtained by various impulse-approximation calculations. Although the calculations depend on the manner of specifying the energy and momentum dependence of the photon-nucleon amplitudes in the nucleus, a calculation assuming that the three nucleons were initially at rest accounts for most of the measurements.
Keywords
This publication has 7 references indexed in Scilit:
- Experimental Study of the ReactionHe3(γ, π+)H3up to 260 MeVPhysical Review B, 1966
- Three-Nucleon SystemsPhysical Review B, 1964
- Theory of the Electromagnetic Form Factors ofandPhysical Review B, 1964
- Absolute calibration of a wilson type “Quantameter”Nuclear Instruments and Methods, 1963
- Extension of the NBS P2 Chamber Calibration to 260 MeVReview of Scientific Instruments, 1963
- Relativistic Dispersion Relation Approach to Photomeson ProductionPhysical Review B, 1957
- Energy-Angle Distribution of Thin Target BremsstrahlungPhysical Review B, 1951