Spectroscopic measurement of /sup 204/Pb isotope shift and /sup 205/Pb nuclear spin

Thesis/Dissertation · Sat Dec 31 23:00:00 EST 1983

OSTI ID:5405286

Schonberger, P

The isotope shift of /sup 204/Pb and the nuclear spin of 1.4 X 10/sup 7/-y /sup 205/Pb was determined from a high-resolution optical measurement of the 6p/sup 23/P/sub 0/-6p7s/sup 3/P/sub 1//sup 0/ 283.3-nm resonance line. The value of the shift, relative to /sup 208/Pb is -140.2(8) x 10/sup -3/cm/sup -1/, the negative sign indicating a shift to lower wave numbers. The precision is 3-4 times greater than that of previous measurements. The spin of /sup 205/Pb I = 5/2 was obtained from the measurement of the relative intensities of its three hyperfine components. This method of absorption spectroscopy determination of ground state nuclear spin is applicable to any stable or long-lived isotope. High resolution optical absorption spectra were obtained with a 25.4 cm diffraction grating in a 9.1 m focal length Czerny-Turner spectrometer. A signal-averaging scanning technique was used to record the spectra. Increased precision in the isotope shift measurement was attained by using separated isotope samples of /sup 204/Pb and /sup 207/Pb.

• Research Organization: Ural'skij Nauchno-Issledovatel'skij Inst. Chernykh Metallov, Sverdlovsk (USSR)
• OSTI ID: 5405286
• Country of Publication: United States
• Language: English

Related Subjects

651924* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Moments & Spin-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION SPECTRA
ACCURACY
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
HYPERFINE STRUCTURE
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD 204
LEAD 205
LEAD ISOTOPES
MEASURING METHODS
NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPECTRAL SHIFT
SPIN
YEARS LIVING RADIOISOTOPES