Observation of nuclear excitation by electron transition in Au-197 with synchrotron x rays and an avalanche photodiode

Authors
Kishimoto, S Yoda, Y Seto, M Kobayashi, Y Kitao, S Haruki, R Kawauchi, T Fukutani, K Okano, T
Citation
S. Kishimoto et al., Observation of nuclear excitation by electron transition in Au-197 with synchrotron x rays and an avalanche photodiode, PHYS REV L, 85(9), 2000, pp. 1831-1834
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
9
Year of publication
2000
Pages
1831 - 1834
Database
ISI
SICI code
0031-9007(20000828)85:9<1831:OONEBE>2.0.ZU;2-6
Abstract
We have succeeded in observing nuclear excitation by electron transition (N EET) in Au-197 by a new method. Monochromatic x-rays of synchrotron radiati on were used to ionize the K shell of gold atoms in a target foil. The inte rnal-conversion electrons emitted from excited nuclei were detected with a silicon avalanche photodiode. At a photon energy of 80.989 keV, the NEET pr obability in Au-197 was determined to be (5.0 +/- 0.6) x 10(-8) from a comp arison of the event number per photon between NEET and the nuclear resonanc e at 77.351 keV.