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Titolo:
BAND STRUCTURES AND PROTON-NEUTRON INTERACTIONS IN TA-174
Autore:
BARK RA; CARLSSON H; FREEMAN SJ; HAGEMANN GB; INGEBRETSEN F; JENSEN HJ; LONNROTH T; PIIPARINEN MJ; RAGNARSSON I; RYDE H; SCHNACKPETERSEN H; SEMMES PB; TJOM PO;
Indirizzi:
UNIV COPENHAGEN,NIELS BOHR INST,TANDEM ACCELERATOR LAB ROSKILDE DENMARK LUND UNIV,DEPT PHYS S-22100 LUND SWEDEN UNIV OSLO,DEPT PHYS OSLO NORWAY LUND INST TECHNOL,DEPT MATH PHYS S-22100 LUND SWEDEN TENNESSEE TECHNOL UNIV,DEPT PHYS COOKEVILLE TN 38505
Titolo Testata:
Nuclear physics. A
fascicolo: 3-4, volume: 630, anno: 1998,
pagine: 603 - 630
SICI:
0375-9474(1998)630:3-4<603:BSAPII>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGH-SPIN STATES; ODD-ODD NUCLEI; DOUBLY DECOUPLED STRUCTURES; DEPENDENT TRANSITION RATES; ROTATIONAL BANDS; ELECTROMAGNETIC PROPERTIES; IDENTICAL BANDS; YRAST BAND; CONFIGURATION;
Keywords:
GD-160(F-19, 5N), E=103, 105 MEV, MEASURED E-GAMMA, I-GAMMA, GAMMA-GAMMA-COIN; TA-174 DEDUCED HIGH-SPIN LEVELS; J, PI, ROTATIONAL BAND STRUCTURE, CONFIGURATIONS, NILSSON ASSIGNMENTS, ALIGNMENTS, B(M1)/B(E2) RATIOS, SIGNATURE INVERSION, PROTON-NEUTRON INTERACTIONS, CROSSING FREQUENCIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
R.A. Bark et al., "BAND STRUCTURES AND PROTON-NEUTRON INTERACTIONS IN TA-174", Nuclear physics. A, 630(3-4), 1998, pp. 603-630

Abstract

Six rotational bands in the odd-odd nucleus Ta-174 have been populated with the Gd-160(F-19,5n) reaction. High-spin states were identified using the NORDBALL array. Both signatures of the doubly decoupled pi 1/2(-)[541] circle times nu 1/2(-)[521] band and semi-decoupled pi 1/2(-)[541] circle times nu 7/2(+)[633] band are observed, in addition to the high-K couplings of the pi 9/2(-)[514] circle times nu 7/2(+)[633], pi 9/2(-)[514] circle times nu 5/2(-)[512], pi 7/2(+)[404] circle times nu 7/2(+)[633], and pi 5/2(+)[402] circle times nu 5/2(-)[512] configurations. The signature splitting of the pi 1/2(-)[541] circle times nu 7/2(+)[633] band is inverted from the expected splitting, and this is interpreted as being due to a residual proton-neutron interaction. It is shown empirically that this interaction, together with deformation changes, can account for the increased crossing frequency associated with the alignment of i(13/2) neutrons in the pi 1/2(-)[541] bandsof odd-Z nuclei. (C) 1998 Elsevier Science B.V.

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Documento generato il 29/11/20 alle ore 07:07:00