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

页码：7 / 8

页数：2

共 7 条

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