Experiments with Thermalized Rare Isotope Beams from Projectile Fragmentation: A Precision Mass Measurement of the Superallowed {beta} Emitter {sup 38}Ca

Journal Article · Fri Apr 21 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.152501· OSTI ID:20777153

Bollen, G; Davies, D; Facina, M; Huikari, J; Kwan, E; Lofy, P A; Morrissey, D J; Prinke, A; Ringle, R; Savory, J; Schury, P; Schwarz, S; Sumithrarachchi, C; Sun, T; Weissman, L ^[1]

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1. National Superconducting Cyclotron Laboratory. Michigan State University, East Lansing, Michigan (United States)

The mass of the short-lived radio nuclide {sup 38}Ca (T{sub 1/2}=440 ms) has been measured with the 9.4-T Penning trap mass spectrometer of the Low-Energy Beam and Ion Trap Facility. A mass uncertainty of {delta}m=280 eV has been achieved, corresponding to {delta}m/m=8x10{sup -9}. The result makes {sup 38}Ca, a superallowed beta emitter, a new candidate to test the conserved-vector-current hypothesis. The experiment is also the first demonstration that short-lived radioactive isotopes produced by projectile fragmentation of relativistic heavy-ion beams can be slowed down and prepared such that precision experiments of this kind are possible.

• OSTI ID: 20777153
• Journal Information: Physical Review Letters, Vol. 96, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.96.152501; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
CALCIUM 38
EV RANGE 100-1000
HEAVY IONS
HYPOTHESIS
ION BEAMS
MASS
MASS SPECTROMETERS
NUCLEAR FRAGMENTATION
RELATIVISTIC RANGE
VECTOR CURRENTS