Experimental determination of the double K-shell vacancy creation probability in the electron-capture decay of 55Fe with a microcalorimeter
Abstract
The probability of double K-shell vacancy production following electron-capture decay is determined for 55Fe using a high-resolution microcalorimeter. The K-hypersatellite lines arising from double K-shell-vacancy filling are directly resolved within the measured spectra of X-ray emissions which are dominated by Mn K-X-ray diagram lines. The energies of the Mn \textit{K}-hypersatellite lines, Kα2h, Kα1h, and Kβ1,3h, are measured as (6143.5±0.5) eV, (6162.1±1.5) eV and (6811.9±2.6) eV, respectively. The relative intensities of \textit{K}-hypersatellite to diagram X-rays are measured to be (1.30 ± 0.07) × 10−4. From the relative intensities together with established fluorescence yield values, the probability of double-vacancy creation per K-shell capture (PKK) is determined as (1.22 ± 0.09) × 10−4. Comparisons with previous experimental results and theoretical calculations are discussed.
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BibTeX
@misc{zhang2026experimental,
title = {{Experimental determination of the double $K$-shell vacancy creation probability in the electron-capture decay of $^55$Fe with a microcalorimeter}},
author = {Shuo Zhang and Karol Kozioł and Caojie Shao and Ruitian Zhang and Cheng Qian and Kebao Shu and JingKai Xia and Guocheng Wei and Yingli Xue and Huan Jia and Neng Pu and Hanjie Cai and Deyang Yu and Hongqiang Zhang and Liangting Sun and Yuan He and Reinhold Schuch and Xinwen Ma},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.29715},
eprint = {2610.29715},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.29715},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Experimental determination of the double K-shell vacancy creation probability in the electron-capture decay of ^55Fe with a microcalorimeter
AU - Shuo Zhang
AU - Karol Kozioł
AU - Caojie Shao
AU - Ruitian Zhang
AU - Cheng Qian
AU - Kebao Shu
AU - JingKai Xia
AU - Guocheng Wei
AU - Yingli Xue
AU - Huan Jia
AU - Neng Pu
AU - Hanjie Cai
AU - Deyang Yu
AU - Hongqiang Zhang
AU - Liangting Sun
AU - Yuan He
AU - Reinhold Schuch
AU - Xinwen Ma
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2610.29715
UR - https://arxiv.org/abs/2610.29715
AB - The probability of double K-shell vacancy production following electron-capture decay is determined for ^55Fe using a high-resolution microcalorimeter. The K-hypersatellite lines arising from double K-shell-vacancy filling are directly resolved within the measured spectra of X-ray emissions which are dominated by Mn K-X-ray diagram lines. The energies of the Mn \textit{K}-hypersatellite lines, Kα_2^h, Kα_1^h, and Kβ_1,3^h, are measured as (6143.5±0.5) eV, (6162.1±1.5) eV and (6811.9±2.6) eV, respectively. The relative intensities of \textit{K}-hypersatellite to diagram X-rays are measured to be (1.30 ± 0.07) × 10^−4. From the relative intensities together with established fluorescence yield values, the probability of double-vacancy creation per K-shell capture (P_KK) is determined as (1.22 ± 0.09) × 10^−4. Comparisons with previous experimental results and theoretical calculations are discussed.
ER -