{sup 49}Cr: Towards full spectroscopy up to 4 MeV

Journal Article · Wed Feb 15 00:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.024313· OSTI ID:20771264

Brandolini, F; Menegazzo, R; Pavan, P; Lenzi, S ^[1]; Ribas, R V ^[2]; Axiotis, M; De Poli, M; Napoli, D ^[3]; Sanchez-Solano, J ^[4]; Dewald, A; Fitzler, A; Jessen, K; Kasemann, S; Brentano, P von ^[5]

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1. Dipartimento di Fisica dell'Universita and INFN, Sezione di Padova, Padova (Italy)
2. Instituto de Fisica, Universidade de Sao Paulo, Sao Paulo (Brazil)
3. Laboratori Nazionali di Legnaro-INFN, Legnaro (Italy)
4. Departamento de Fisica Teorica, Universidad Autonoma, Cantoblanco, Madrid (Spain)
5. Institut fuer Kernphysik der Universitaet zu Koeln (Germany)

The nucleus {sup 49}Cr has been studied by analyzing {gamma}-{gamma} coincidences in the reaction {sup 46}Ti({alpha},n){sup 49}Cr at the bombarding energy of 12 MeV. The level scheme has been greatly extended at low excitation energy, and several lifetimes have been determined by means of the Doppler shift attenuation method. Shell model calculations in the full pf configuration space reproduce well the negative parity levels. Satisfactory agreement is obtained for positive parity levels by extending the configuration space to include a nucleon-hole in either the 1d{sub 3/2} or 2s{sub 1/2} orbitals. A nearly one-to-one correspondence is found between experimental and theoretical levels up to an excitation energy of 4 MeV. Experimental data and shell model calculations are interpreted in terms of the Nilsson diagram and the particle-rotor model, showing the strongly coupled nature of the bands in this prolate nucleus. Nine values of K{sup {pi}} are proposed for the levels observed in this experiment. As a secondary result, it is shown that the values of the experimental magnetic moments in 1f{sub 7/2} nuclei are well reproduced without quenching the nucleon g factors.

• OSTI ID: 20771264
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 2; Other Information: DOI: 10.1103/PhysRevC.73.024313; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
CHROMIUM 49
COLLECTIVE MODEL
DSA METHOD
ENERGY LEVELS
EXCITATION
LANDE FACTOR
LIFETIME
MEV RANGE
NEUTRONS
NUCLEAR MAGNETIC MOMENTS
PARITY
PARTICLE-CORE COUPLING MODEL
SHELL MODELS
TITANIUM 46 TARGET