This article has an erratum: [erratum]

Europhys. Lett.
Volume 69, Number 6, March 2005
Page(s) 900 - 905
Section Nuclear physics
Published online 16 February 2005
Europhys. Lett., 69 (6), pp. 900-905 (2005)
DOI: 10.1209/epl/i2004-10439-3

Modification of the nuclear energy level width

Il-T. Cheon

Department of Physics, Yonsei University - Seoul 120-749, Korea

received 16 November 2004; accepted in final form 19 January 2005
published online 16 February 2005

A possible method is proposed to modulate the nuclear $\gamma$-decay constant which is related to the lifetime. When the radioactive $\chem{{}^{133}Cs}$ nucleus embedded in a compound is placed between two silver plates and separated by 0.02$\un{cm}$ from each plate, the width of 81$\un{keV}$ excited level turns out to be $6.90\times 10^{-8}$$\un{eV}$ at 4.2$\un{K}$, which is about 4% narrower than the natural line width, $7.27\times 10^{-8}$$\un{eV}$. This implies 5.4% increase of the lifetime.

21.10.Tg - Lifetimes.
23.20.Lv - $\gamma$ transitions and level energies.
25.20.Dc - Photon absorption and scattering.

© EDP Sciences 2005