Lifetime Measurements of the Neutron-Rich N=30 Isotones {sup 50}Ca and {sup 51}Sc: Orbital Dependence of Effective Charges in the fp Shell

Journal Article · Fri Jun 19 00:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.242502· OSTI ID:21346974

Valiente-Dobon, J J; Recchia, F; Corradi, L; Angelis, G de; Fioretto, E; Gottardo, A; Grodner, E; Guiot, B; Mason, P; Napoli, D R; Sahin, E; Silvestri, R; Stefanini, A M ^[1]; Mengoni, D; Lenzi, S M; Lunardi, S; Montagnoli, G; Scarlassara, F; Maglione, E ^[2]; Gadea, A ^[1]

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1. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro (Italy)
2. Dipartimento di Fisica dell'Universita and INFN Sezione di Padova, Padova (Italy)

The lifetimes of the first excited states of the N=30 isotones {sup 50}Ca and {sup 51}Sc have been determined using the Recoil Distance Doppler Shift method in combination with the CLARA-PRISMA spectrometers. This is the first time such a method is applied to measure lifetimes of neutron-rich nuclei populated via a multinucleon transfer reaction. This extends the lifetime knowledge beyond the f{sub 7/2} shell closure and allows us to derive the effective proton and neutron charges in the fp shell near the doubly magic nucleus {sup 48}Ca, using large-scale, shell-model calculations. These results indicate an orbital dependence of the core polarization along the fp shell.

• OSTI ID: 21346974
• Journal Information: Physical Review Letters, Vol. 102, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.102.242502; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 48
CALCIUM 50
DOPPLER EFFECT
EFFECTIVE CHARGE
EXCITED STATES
ISOTONIC NUCLEI
LIFETIME
MAGIC NUCLEI
MULTI-NUCLEON TRANSFER REACTIONS
NEUTRON-RICH ISOTOPES
NEUTRONS
POLARIZATION
PROTONS
SCANDIUM 51
SHELL MODELS
SPECTROMETERS
ALKALINE EARTH ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM ISOTOPES
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
RADIOISOTOPES
SCANDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
TRANSFER REACTIONS