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Half-life of the nuclear cosmochronometer $^{176}$Lu measured with a windowless 4π solid angle scintillation detector

Earth Sciences

Half-life of the nuclear cosmochronometer $^{176}$Lu measured with a windowless 4π solid angle scintillation detector

T. Hayakawa, T. Shizuma, et al.

Discover groundbreaking research on the $^{176}$Lu-$^{176}$Hf nuclear decay, a critical tool for dating astrophysical and geological events. This study, led by Takehito Hayakawa, Toshiyuki Shizuma, and Tsuyoshi Iizuka, presents new half-life measurements that challenge existing values, utilizing an innovative windowless solid angle detector. Unlock the mysteries of time with this compelling research!

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Playback language: English
Abstract
The $^{176}$Lu-$^{176}$Hf nuclear decay is a powerful tool for measuring the age of astrophysical and geological events and has been used as a “cosmochronometer”. However, existing half-life values of $^{176}$Lu vary significantly. This paper reports half-life measurements using a windowless 4π solid angle detector based on bismuth germanate (BGO) scintillation crystals. A natural Lu sample is placed inside the detector, allowing for measurement of the total energy released from $^{176}$Lu decay. The measured half-life of (3.719 ± 0.007) × 10$^{10}$ yr is consistent with values obtained from terrestrial rocks.
Publisher
Communications Physics
Published On
Nov 03, 2023
Authors
Takehito Hayakawa, Toshiyuki Shizuma, Tsuyoshi Iizuka
Tags
$^{176}$Lu-$^{176}$Hf nuclear decay
cosmochronometer
half-life measurement
bismuth germanate
geological events
astrophysical events
Lu sample

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