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arXiv · 1008.1918

Radiative electron capture in the first forbidden unique decay of 81Kr

S. Mianowski·E. Werner-Malento·A. Korgul·M. Pomorski·K. Pachucki·M. Pfützner·B. Szweryn·J. Żylicz·P. Hornshøj·T. Nilsson·K. Rykaczewski
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Abstract

The photon spectrum accompanying the orbital K-electron capture in the first forbidden unique decay of 81Kr was measured. The total radiation intensity for the photon energies larger than 50 keV was found to be 1.47(6) x 10^{-4} per K-capture. Both the shape of the spectrum and its intensity relative to the ordinary, non-radiative capture rate, are compared to theoretical predictions. The best agreement is found for the recently developed model which employs the length gauge for the electromagnetic field.

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S. Mianowski, E. Werner-Malento, A. Korgul, M. Pomorski, K. Pachucki, M. Pfützner, B. Szweryn, J. Żylicz, P. Hornshøj, T. Nilsson, K. Rykaczewski. 2010-08-11. Radiative electron capture in the first forbidden unique decay of 81Kr. https://doi.org/10.1103/physrevc.82.044308

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