New test of modulated electron capture decay of hydrogen-like Pm-142 ions: Precision measurement of purely exponential decay

FRS-ESR, ILIMA, SPARC, and TBWD Collaborations

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

5 Цитирования (Scopus)

Аннотация

An experiment addressing electron capture (EC) decay of hydrogen-like Pm60+142 ions has been conducted at the experimental storage ring (ESR) at GSI. The decay appears to be purely exponential and no modulations were observed. Decay times for about 9000 individual EC decays have been measured by applying the single-ion decay spectroscopy method. Both visually and automatically analysed data can be described by a single exponential decay with decay constants of 0.0126(7)s−1 for automatic analysis and 0.0141(7)s−1 for manual analysis. If a modulation superimposed on the exponential decay curve is assumed, the best fit gives a modulation amplitude of merely 0.019(15), which is compatible with zero and by 4.9 standard deviations smaller than in the original observation which had an amplitude of 0.23(4).

Язык оригиналаанглийский
Номер статьи134800
Число страниц9
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том797
DOI
СостояниеОпубликовано - 10 окт 2019

Предметные области Scopus

  • Ядерная физика и физика высоких энергий

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