Neutrino induced Doppler broadening
Journal Article
·
· Journal of Research of the National Institute of Standards and Technology
When a nucleus undergoes beta decay via the electron capture reaction, it emits an electron neutrino. The neutrino emission gives a small recoil to the atom, which can be experimentally observed as a Doppler broadening on subsequently emitted gamma rays. Using the two-axis flat-crystal spectrometer GAMS4 and the electron capture reaction in {sup 152}Eu, the motion of atoms having an excess kinetic energy of 3 eV in the solid state was studied. It is shown how the motion of the atom during the first hundreds of femtoseconds can be reconstructed. The relevance of this knowledge for a new neutrino helicity experiment is discussed.
- Research Organization:
- Univ. de Fribourg (CH)
- OSTI ID:
- 20085582
- Journal Information:
- Journal of Research of the National Institute of Standards and Technology, Journal Name: Journal of Research of the National Institute of Standards and Technology Journal Issue: 1 Vol. 105; ISSN 1044-677X; ISSN JRITEF
- Country of Publication:
- United States
- Language:
- English
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