DIPOLE AND QUADRUPOLE MOMENTS OF THE ISOMERIC Hg$sup 197$* NUCLEUS ISOMERIC ISOTOPE SHIFT

Journal Article · Wed Jul 01 04:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.115.130· OSTI ID:4209371

Melissinos, A C; Davis, S P

The hyperfine structures of five optical lines of 65hour radioiictive Hg/ sup 197/ and 25-hour isomeric Hg/sup 197*/ were measured. Riidioactive mercury produced by- cyclotron bombardment and excited in electrodeless discharge tubes containing as few as 5 x 10/sup 12/ atoms, free of natural mercunry, gave adequate light intensities. The analysis of the hyperfine structure confirmed the magnetic dipole moment and isotope shift of Hg/sup 197/ in its ground state (I =1/2), and gave the following values for Hg/sup 197*/ (based on I=13/2): mu / sub 197*/=-l.04 plus or minus 0.0l nm; Q/sub 197*/=(1.5 plus or minus 0.3) x 10/ sup -24/ cm/sup 2/; isotope shift displacement (from Hg/sup 198/ in the 2537 A line) + 70 plus or minus 7 x l0/sup -3/ cm/sup -1/. Thus an isomeric shift of atomic energy levels resulting from the excitation of the nucleus from its ground state I = 1/2 to the isomeric state I = 13/2 is observed. In the 2537 A line of mercury this shift amounts to -2l plus or minus 6 x l0/sup -3/ cm/sup -1/ (auth)

• Research Organization: Massachusetts Inst. of Tech., Cambridge
• NSA Number: NSA-13-022924
• OSTI ID: 4209371
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 115; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATOMIC MODELS
ATOMS
CYCLOTRONS
DIPOLES
ELECTRIC DISCHARGES
ELECTRIC MOMENTS
ENERGY LEVELS
EXCITATION
HALF-LIFE
HYPERFINE STRUCTURE
IRRADIATION
ISOMERS
ISOTOPE EFFECTS
MAGNETIC MOMENTS
MEASURED VALUES
MERCURY 197
PHYSICS AND MATHEMATICS
PRODUCTION
QUADRUPOLE MOMENTS
RADIOISOTOPES
SPECTRA
SPECTRAL SHIFT
SPIN