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

被引:28
作者
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
机构
[1] UNIV TOKYO, INST NUCL STUDY, TANASHI, TOKYO 188, JAPAN
[2] RIKKYO UNIV, DEPT PHYS, TOSHIMA KU, TOKYO 171, JAPAN
[3] TOKYO METROPOLITAN UNIV, DEPT CHEM, HACHIOJI, TOKYO 19203, JAPAN
[4] SAITAMA UNIV, DEPT PHYS, URAWA, SAITAMA 388, JAPAN
[5] OSAKA UNIV, DEPT PHYS, TOYONAKA, OSAKA 560, JAPAN
[6] TOHOKU UNIV, CTR CYCLOTRON & RADIOISOTOPE, SENDAI, MIYAGI 980, JAPAN
[7] NIIGATA UNIV, DEPT CHEM, NIIGATA 95021, JAPAN
[8] TOKYO INST TECHNOL, DEPT APPL PHYS, TOKYO 152, JAPAN
[9] EWHA WOMANS UNIV, DEPT PHYS, SEOUL, SOUTH KOREA
来源
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1995年 / 352卷 / 01期
关键词
23.60.+e; 25.70.-z; 27.80.+w;
D O I
10.1007/BF01292753
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
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-200 (E(lab) = 186 MeV) reactions. The evaporation residues were separated from the beam by using a gas-filled recoil separator and implanted onto a position-sensitive solid-state detector. The alpha-decay energies (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.
引用
收藏
页码:7 / 8
页数:2
相关论文
共 7 条
  • [1] Morita K., Et al., Nucl. Instr. and Meth., 70 B, (1992)
  • [2] Hornshoj P., Wilsky K., Hansen P.G., Lindahl A., Nielsen O.B., Nucl.Phys., 163 A, (1971)
  • [3] Schmidt K.-H., Sahm C.-C., Pielenz K., Clerc H.-G., Z. Phys., 316 A, (1984)
  • [4] Moller P., Myers W.D., Swiatecki W.I., Treiner J., Atomic Data and Nuclear Data Tables, 39, (1988)
  • [5] Treytl W., Valli K., Nucl. Phys., 97 A, (1967)
  • [6] Leino M.E., Yashita S., Ghiorso A., Phys. Rev., 24 C, (1981)
  • [7] Brown B.A., Phys. Rev., 46 C, (1992)