Gamma-Ray Absorption Coefficients at 6.13 Mev
Open Access
- 15 December 1954
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 96 (6), 1563-1565
- https://doi.org/10.1103/physrev.96.1563
Abstract
Narrow-beam geometry attenuation measurements have been made with 6.13-Mev gamma rays which follow the beta decay of using a NaI scintillation spectrometer detector. The measured absorption coefficients in /g are: 0.0244 (C), 0.0264 (Al), 0.0309 (Cu), 0.0359 (Sn), 0.0359 (Cd), 0.0436 (Pb), 0.0459 (U), 0.0284 (O), 0.0350 (NaI). The statistical standard deviations range from 0.2 percent to 0.4 percent. These results are in good agreement with previous experimental work in those cases for which earlier data exist. "Experimental" pair-production cross sections are derived from the data and compared with the calculated values from the Born approximation to the Bethe-Heitler theory. A discrepancy of 7 to 8 percent is observed for high atomic number elements (Pb and U).
Keywords
This publication has 5 references indexed in Scilit:
- Extranuclear Interactions of Electrons and Gamma RaysAnnual Review of Nuclear Science, 1953
- Absorption of 5.3-Mev, 10.3-Mev, and 17.6-Mev Gamma-RaysPhysical Review B, 1952
- Gamma-Ray Absorption MeasurementsPhysical Review B, 1952
- Gamma-Ray Absorption CoefficientsReviews of Modern Physics, 1952
- -Rays from the Decay ofPhysical Review B, 1951