Existence of long-lived isomeric states in naturally-occurring neutron-deficient Th isotopes

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.021303· OSTI ID:21061926

Marinov, A; Kashiv, Y ^[1]; Rodushkin, I ^[2]; Halicz, L; Segal, I ^[3]; Pape, A ^[4]; Gentry, R V ^[5]; Miller, H W ^[6]; Kolb, D ^[7]; Brandt, R ^[8]

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1. Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904 (Israel)
2. Analytica AB, Aurorum 10, S-977 75 Luleaa (Sweden)
3. Geological Survey of Israel, 30 Malkhei Israel St., Jerusalem 95501 (Israel)
4. IPHC-UMR7178, IN2P3-CNRS/ULP, BP 28, F-67037 Strasbourg cedex 2 (France)
5. Earth Science Associates, P.O. Box 12067, Knoxville, Tennessee 37912-0067 (United States)
6. P. O. Box 1092, Boulder, Colorado 80306-1092 (United States)
7. Department of Physics, University GH Kassel, D-34109 Kassel (Germany)
8. Kernchemie, Philipps University, D-35041 Marburg (Germany)

Four long-lived neutron-deficient Th isotopes with atomic mass numbers 211 to 218 and abundances of (1-10)x10{sup -11} relative to {sup 232}Th have been found in a study of naturally-occurring Th using inductively coupled plasma-sector field mass spectrometry. It is deduced that long-lived isomeric states exist in these isotopes. The hypothesis that they might belong to a new class of long-lived high spin super- and hyperdeformed isomeric states is discussed.

• OSTI ID: 21061926
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 76, Issue 2; Other Information: DOI: 10.1103/PhysRevC.76.021303; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEFORMED NUCLEI
HIGH SPIN STATES
ISOMERIC NUCLEI
MASS SPECTROSCOPY
NEUTRONS
NUCLEAR STRUCTURE
SPIN
THORIUM 211
THORIUM 215
THORIUM 218
THORIUM 232