Abstract
We have calculated the cross section for . This process depends critically on the same matrix element that gives the amplitude for singly radiative capture from the continuum state. It has been suggested that "anomalous" transitions from this continuum state may explain a long-standing discrepancy in capture ( mb and mb) by contributing roughly 8% to the total capture cross section. If this speculation is correct then the branching ratio of doubly to singly radiative capture is 1.4×. On the other hand a conventional estimate of this amplitude yields a branching ratio of about 3.4×. An experimental measurement of the doubly radiative cross section in the 10-μb region should therefore settle the question of the importance of the initial state in the total radiative capture cross section. Such a measurement seems at present to be much easier than similarly motivated polarization measurements.
- Received 24 April 1972
DOI:https://doi.org/10.1103/PhysRevC.6.1964
©1972 American Physical Society