Results of a Direct Search Using Synchrotron Radiation for the Low-Energy (229)Th Nuclear Isomeric Transition.

Jeet, Justin; Schneider, Christian; Sullivan, Scott T; Rellergert, Wade G; Mirzadeh, Saed; Cassanho, A; Jenssen, H P; Tkalya, Eugene V; Hudson, Eric R

Jeet, Justin; Schneider, Christian; Sullivan, Scott T; Rellergert, Wade G; Mirzadeh, Saed; Cassanho, A; Jenssen, H P; Tkalya, Eugene V; Hudson, Eric R.

Afiliação

Jeet J; Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Schneider C; Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Sullivan ST; Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Rellergert WG; Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA.
Mirzadeh S; Nuclear Security and Isotope Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
Cassanho A; AC Materials, Inc., 756 Anclote Road, Tarpon Springs, Florida 34689, USA.
Jenssen HP; AC Materials, Inc., 756 Anclote Road, Tarpon Springs, Florida 34689, USA.
Tkalya EV; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia.
Hudson ER; Nuclear Safety Institute of Russian Academy of Science, Bol'shaya Tulskaya 52, Moscow 115191, Russia.

Phys Rev Lett ; 114(25): 253001, 2015 Jun 26.

Article em En | MEDLINE | ID: mdl-26197124

ABSTRACT

ABSTRACT

We report the results of a direct search for the (229)Th (I(π)=3/2(+)â5/2(+)) nuclear isomeric transition, performed by exposing (229)Th-doped LiSrAlF(6) crystals to tunable vacuum-ultraviolet synchrotron radiation and observing any resulting fluorescence. We also use existing nuclear physics data to establish a range of possible transition strengths for the isomeric transition. We find no evidence for the thorium nuclear transition between 7.3 eV and 8.8 eV with transition lifetime (1-2) sâ²τâ²(2000-5600) s. This measurement excludes roughly half of the favored transition search area and can be used to direct future searches.

Buscar no Google

Imprimir

XML

PubMed Links

Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Estados Unidos

Buscar no Google

Imprimir

XML

PubMed Links