EXCITATION-ENERGY OF THE PI-S(1/2) INTRUDER STATE IN BI-189

被引:17
作者
BATCHELDER, JC
TOTH, KS
MOLTZ, DM
OGNIBENE, TJ
ROWE, MW
BINGHAM, CR
ZGANJAR, EF
ZIMMERMAN, BE
机构
[1] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA
[2] LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA
[3] UNIV CALIF BERKELEY, BERKELEY, CA 94720 USA
[4] UNIV TENNESSEE, KNOXVILLE, TN 37996 USA
来源
PHYSICAL REVIEW C | 1995年 / 52卷 / 04期
关键词
D O I
10.1103/PhysRevC.52.1807
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
In a series of Ti-48 bombardments of Sm-144 the decay energy of the Bi-189(m) (pi s(1/2)) alpha transition that proceeds to the (pi s(1/2)) ground state of Tl-185 was measured to be 7.30(4) MeV. This result establishes the excitation energy of Bi-189(m) as 190(40) keV rather than the adopted 92(10)-keV value. Our data indicate a leveling off in excitation energy at N approximate to 106 for the s(1/2) intruder state in the odd-A Bi isotopes rather than a continued drop at that neutron number as inferred by Coenen et al. in their discussion of intruder state systematics in the Pb region. Consequences of this discrepancy for the adopted excitation energy of the pi s(1/2) isomer in Bi-187 are discussed.
引用
收藏
页码:1807 / 1809
页数:3
相关论文
共 13 条
[1]   POSITIVE-PARITY STATES IN SOME ODD-MASS BISMUTH ISOTOPES [J].
ALPSTEN, M ;
ASTNER, G .
NUCLEAR PHYSICS A, 1969, A134 (02) :407-&
[2]   4-PI-IONIZATION CHAMBER - A DETECTOR FOR A KINEMATIC SEPARATOR OF HEAVY-ION REACTION-PRODUCTS [J].
ANDREYEV, AN ;
BOGDANOV, DD ;
CHEPIGIN, VI ;
GORSHKOV, VA ;
MIKHAILOV, KV ;
KABACHENKO, AP ;
POPEKO, GS ;
SARO, S ;
TERAKOPIAN, GM ;
YEREMIN, AV ;
ZEINALOV, SS .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1993, 330 (1-2) :125-131
[3]  
BEENE JR, UNPUB MODIFICATION P
[4]   ALPHA-DECAY OF NEUTRON-DEFICIENT ODD BI NUCLEI - SHELL-MODEL INTRUDER STATES IN TL AND BI ISOTOPES [J].
COENEN, E ;
DENEFFE, K ;
HUYSE, M ;
VANDUPPEN, P ;
WOOD, JL .
PHYSICAL REVIEW LETTERS, 1985, 54 (16) :1783-1786
[5]  
Firestone R. B., 1992, Nuclear Data Sheets, V65, P589, DOI 10.1016/0090-3752(92)80015-C
[6]   STATISTICAL-MODEL CALCULATIONS IN HEAVY-ION REACTIONS [J].
GAVRON, A .
PHYSICAL REVIEW C, 1980, 21 (01) :230-236
[7]   COEXISTENCE IN ODD-MASS NUCLEI [J].
HEYDE, K ;
VANISACKER, P ;
WAROQUIER, M ;
WOOD, JL ;
MEYER, RA .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1983, 102 (5-6) :291-393
[8]  
HUYSE M, 1988, AIP C P, V164, P305
[9]   A FAST IN-BEAM RECOIL CATCHER WHEEL AND THE OBSERVATION OF BETA-DELAYED 2-PROTON EMISSION FROM AR-31 [J].
REIFF, JE ;
HOTCHKIS, MAC ;
MOLTZ, DM ;
LANG, TF ;
ROBERTSON, JD ;
CERNY, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1989, 276 (1-2) :228-232
[10]   NEW ISOMERS OF TL-185,TL-187 AND DEPARTURE OF H9-2 INTRUDER STATE [J].
SCHMIDT, AG ;
MLEKODAJ, RL ;
ROBINSON, EL ;
AVIGNONE, FT ;
LIN, J ;
GOWDY, GM ;
WOOD, JL ;
FINK, RW .
PHYSICS LETTERS B, 1977, 66 (02) :133-135