Completion of the mass-20 isospin quintet by employing a helium-jet-fed on-line mass separator

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.42.43· OSTI ID:6333697

Moltz, D M; Aystoe, J; Cable, M D; von Dincklage, R D; Parry, R F; Wouters, J M; Cerny, J

Observation of ..beta..-delayed protons from the decay of the mass-separated T/sub g/ = : 2 nuclide /sup 20/Mg (t/sub 1/2/ approx. 95 ms) establishes the mass excess of the lowest T = 2 (0/sup +/) state in /sup 20/Na (13.42 +- 0.05 MeV), thereby completing the mass-20 isospin quintet. All members of this multiplet are bound to isospin-allowed particle-decay modes, providing the first test of the isobaric multiplet mass equation for such a quintet. Excellent agreement is observed using only the quadratic form of this equation.

• Research Organization: Department of Chemistry and Lawrence Berkeley Laboratory, University of California, Berkeley, California 720
• OSTI ID: 6333697
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 42:1; ISSN PRLTA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METALS
ALKALINE EARTH ISOTOPES
BARYONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
DECAY
DELAYED PROTONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
GAS TRACK DETECTORS
HADRONS
HALF-LIFE
HELIUM 3 REACTIONS
ISOBARIC NUCLEI
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 20
MAGNESIUM ISOTOPES
MASS FORMULAE
MEASURING INSTRUMENTS
METALS
MEV RANGE
MEV RANGE 10-100
NEON 19
NEON 20 TARGET
NEON ISOTOPES
NEUTRON SPECTRA
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE PROPERTIES
PROTON SPECTRA
PROTONS
RADIATION DETECTORS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM
SPARK CHAMBERS
SPECTRA
TARGETS