HYPERFINE STRUCTURE AND NUCLEAR MOMENTS OF PROTACTINIUM-233

Journal Article · Wed Feb 01 04:00:00 EST 1961 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(61)90241-3· OSTI ID:4066928

MArrus, R; Nierenberg, W A; Winocur, J

By means of the atomic-beam magnetic-resonance method using radioactive detection, the hyperfine structure of /sub 91/Pa/sup 233/ (T/sub 1/>i,= 27.4 days) is investigated. Thre e low-lying states are found in the beam, characterized by electronic angular momenta J = 11/2, 9/2, and 7/2 and g values g/ sub J/ = -0.8141(4), -0.8062(15), and -0.7923(15), respectively. From these results it is inferred that the ground-state configuration of protactinium is almost certainly (5f)2(6d)/sup 1/(7s)/sup 2/. The nuclear spin is measured and found to be I = 3/2, and the magnetic dipole and electric quadrupole hyperfine- structure coupling constants are measured to be A = plus or minus 595(30) and B = plus or minus 2400(300)Mc, respectively. From a direct measurement the nuclear moment is found to be mu /sub I/ = +3.4(0.8) nm. From the hyperfine- structure constants and detailed calculations involving the electronic wave functions, the quadrupole moment is inferred to be Q = -3.0 barns. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-15-013712
• OSTI ID: 4066928
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 23
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR MOMENTUM
ATOMS
BEAMS
CONFIGURATION
COUPLING
DETECTION
DIPOLES
ELECTRIC MOMENTS
ELECTRONS
ENERGY LEVELS
GYROMAGNETIC RATIO
HALF-LIFE
HYPERFINE STRUCTURE
INTERACTIONS
MAGNETIC MOMENTS
MAGNETIC RESONANCE
MATHEMATICS
MEASURED VALUES
MOMENTUM
NUCLEAR MODELS
PHYSICS
PROTACTINIUM 233
QUADRUPOLES
QUANTUM MECHANICS
RADIOACTIVITY
SPIN