Lifetimes in neutron-rich Nd isotopes measured by a Doppler profile method

Journal Article · Mon Nov 07 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.2540· OSTI ID:6849129

Smith, A G; Phillips, W R; Durell, J L; Urban, W; Varley, B J; Pearson, C J; Shannon, J A ^[1]; Ahmad, I; Lister, C J; Morss, L R; Nash, K L; Williams, C W ^[2]; Bentaleb, M; Lubkiewicz, E; Schulz, N ^[3]

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1. Department of Physics and Astronomy, University of Manchester, M13 9PL (United Kingdom)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Centre de Recherches Nucleaires, IN2P3-CNRS, Universite Louis Pasteur, 67037 Strasbourg (France)

The Eurogram-1 array has been used to study [gamma] rays emitted following the spontaneous fission of a [sup 248]Cm source. Yrast level schemes for the neutron-rich nuclei [sup 152,154,156]Nd have been constructed. The stopping of the Nd fragments in the source material leads to Doppler-broadened line shapes for those states that have lifetimes comparable to the stopping time. This paper describes first measurements of lifetimes of medium-spin states in very neutron-rich nuclei obtained from the analysis of these line shapes. The transition quadrupole moments for the yrast states in the spin range 10--16[h bar] have been deduced to be 5.88[plus minus]0.08 [ital e] b ([sup 152]Nd), 5.75[plus minus]0.10 [ital e] b ([sup 154]Nd), and 5.33[plus minus]0.16 [ital e] b ([sup 156]Nd).

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38; FG02-87ER40346
• OSTI ID: 6849129
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:19; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663220 -- Electromagnetic Transitions-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
CURIUM 248
CURIUM ISOTOPES
DECAY
DOPPLER BROADENING
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
EVEN-EVEN NUCLEI
FISSION
GAMMA RADIATION
HEAVY NUCLEI
IONIZING RADIATIONS
ISOTOPES
LIFETIME
LINE BROADENING
METALS
NEODYMIUM
NEUTRON-RICH ISOTOPES
NUCLEAR DECAY
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
PARTICLE PROPERTIES
QUADRUPOLE MOMENTS
RADIATIONS
RADIOISOTOPES
RARE EARTHS
SPIN
SPONTANEOUS FISSION
SPONTANEOUS FISSION RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
YRAST STATES