Excited states in 163,164Ho populated through incomplete-fusion reactions

D. Hojman; M. A. Cardona; D. Bazzacco; N. Blasi; J. Davidson; M. Davidson; M. E. Debray; A. J. Kreiner; S. M. Lenzi; G. Lo Bianco; D. R. Napoli; C. Rossi Alvarez

doi:10.1140/epja/i2004-10009-9

EPJ

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2024 Impact factor 2.8

Hadrons and Nuclei

Eur. Phys. J. A (2004) 21: 383-390
https://doi.org/10.1140/epja/i2004-10009-9

Excited states in ^163,164Ho populated through incomplete-fusion reactions

D. Hojman¹^,2^*, M. A. Cardona¹^,2^,3, D. Bazzacco⁴, N. Blasi⁵, J. Davidson¹^,2, M. Davidson¹^,2, M. E. Debray¹^,3, A. J. Kreiner¹^,2^,3, S. M. Lenzi⁴, G. Lo Bianco⁶, D. R. Napoli⁷ and C. Rossi Alvarez⁴

¹ Departamento de Física, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina
² CONICET, Buenos Aires, Argentina
³ Escuela de Ciencia y Tecnología, Universidad de San Martín, San Martín, Argentina
⁴ Dipartimento di Fisica, Sezione di Padova, Padova, Italy
⁵ Dipartimento di Fisica and INFN, Sezione di Milano, Milano, Italy
⁶ Dipartimento di Fisica, Universitá di Camerino, Camerino (Perugia), Italy
⁷ Laboratori Nazionali di Legnaro, INFN, Legnaro (Padova), Italy

^* e-mail: hojman@tandar.cnea.gov.ar

Abstract

High-spin states in ^163,164Ho were investigated by means of in-beam $\gamma$ -ray spectroscopy techniques using the multidetector array GASP. Excited states in ^163,164Ho were populated predominantly through the incomplete-fusion mechanism in the ¹⁶⁰Gd (¹¹B $,\alpha xn)$ reaction at a beam energy of 61 MeV. Known rotational bands in ¹⁶³ Ho have been extended to higher spins and a three-quasiparticle band has been observed in this nucleus. Rotational bands have been identified in ¹⁶⁴Ho and their configurations have been discussed. Empirical Gallagher-Moszkowski (GM) splitting energies were extracted from the $\pi 7/2^-[523]\otimes\nu 5/2^-[523]$ and $\pi 7/2^-[523]\otimes\nu 5/2^ + [642]$ GM doublets. Alignments, band crossing frequencies, and electromagnetic properties have been analyzed in the framework of the cranking model.