NEW ALPHA-DECAYING NEUTRON-DEFICIENT ISOTOPES RN-197 AND FR-200

Authors
MORITA K PU YH FENG J HIES MG LEE KO YOSHIDA A JEONG SC KUBONO S NOMURA T TAGAYA Y WADA M KUROKAWA M MOTOBAYASHI T OGAWA H UCHIBORI T SUEKI K ISHIZUKA T UCHIYAMA K FUJITA Y MIYATAKE H SHIMODA T SHINOZUKA T KUDO H NAGAI Y SHIN SA
Citation
K. Morita et al., NEW ALPHA-DECAYING NEUTRON-DEFICIENT ISOTOPES RN-197 AND FR-200, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 352(1), 1995, pp. 7-8
Citations number
9
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
Journal title
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI → ACNP
ISSN journal
09397922
Volume
352
Issue
1
Year of publication
1995
Pages
7 - 8
Database
ISI
SICI code
0939-7922(1995)352:1<7:NANIRA>2.0.ZU;2-Z
Abstract
New neutron-deficient isotopes, Rn-197, Rn-197m, and Fr-200 have been produced and identified on the basis of genetic correlations in the Er -166(Ar-36,5n)Rn-197 (E(lab) = 186, 200 MeV), and Tm-169(Ar-36,5n)Fr-2 00 (E(lab) = 186 MeV) reactions. The evaporation residues were separat ed from the beam by using a gas-filled recoil separator and implanted onto a position-sensitive solid-state detector. The alpha-decay energi es (half-lives) of Rn-197, Rn-197m and Fr-200 have been determined to be 7261+/-30 keV (51(-15)(+35) ms), 7370+/-30 keV (18(-5)(+9) ms), and 7500+/-30 keV, (570(-140)(+270) ms), respectively.