Laser spectroscopic measurements of isotope shift and hyperfine structure in sup 207 Bi and sup 208 Bi

Thesis/Dissertation · Thu Dec 31 23:00:00 EST 1987

OSTI ID:6903077

Fang, Z

Measurements of the hyperfine spectra of 38-yr {sup 207}Bi and 3.7 {times} 10{sup 5} - yr {sup 208}Bi in the 6p{sup 3} {sup 4}S{sub 3/2} - 6p{sup 2}7s {sup 4}P{sub 1/2} 306.7-nm resonance line were made using laser spectroscopic methods. The atomic excitation was produced with use of the frequency doubled output of a tunable ring dye laser. Laser absorption spectroscopy was used for the {sup 208}Bi measurement, while fluorescence spectroscopy, with photon counting detection, was used for {sup 208}Bi. The experiments of {sup 207}Bi were performed in both zero and high (0.7515 T) magnetic fields. The latter also provided a reliable measurement of the nuclear spin of {sup 207}Bi. The isotope shift odd-even staggering parameter for {sup 208}Bi, {gamma} = 0.752(43), was derived and used for an isotonic comparison. The measured nuclear magnetic moments are in agreement with theoretical predictions. An improved calculation of the isotope shift constant using a diffuse nuclear charge model is given and a weak, but significant, model dependence of the isotope shifts was found.

• Research Organization: New York Univ., NY (USA)
• OSTI ID: 6903077
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BISMUTH 207
BISMUTH 208
BISMUTH ISOTOPES
CALCULATION METHODS
DATA
DATA ANALYSIS
ELECTRON CAPTURE RADIOISOTOPES
EXPERIMENTAL DATA
HEAVY NUCLEI
HYPERFINE STRUCTURE
INFORMATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LASER SPECTROSCOPY
MAGNETIC FIELDS
MEASURING INSTRUMENTS
MEASURING METHODS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES