skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spectroscopy of /sup 213/At, /sup 212/Po, and /sup 210/Pb following /sup 208/Pb+/sup 7/Li

Abstract

The bombardment of /sup 208/Pb by /sup 7/Li ions has been used to study the properties of excited states in /sup 213/At, /sup 212/Po, and /sup 210/Pb. In-beam measurements with Ge(Li), intrinsic Ge, and Si surface barrier detectors of ..cap alpha..-decay excitation functions, ..cap alpha..-..gamma.. coincidences, ..gamma..-..gamma.. coincidences, ..gamma..-ray angular distributions, and pulsed-beam-..gamma.. timing were made to establish decay schemes, level energies, ..gamma..-ray multipolarities, spin-parity assignments, and isomeric lifetimes. Excited states with spins up to 19/2 h in /sup 213/At and 6 h in /sup 212/Po were identified. The mean lifetimes of the 1272-keV 8/sup +/ and 1193-keV 6/sup +/ states in /sup 210/Pb were measured to be 225(22) and 30(10) nsec, respectively. These lifetimes imply B(E2) values of 51(12) e/sup 2/ fm/sup 4/ for the 8/sup +/ state and 308(115) e/sup 2/ fm/sup 4/ for the 6/sup +/ state. The /sup 213/At decay scheme and the /sup 210/Pb B(E2) values are compared with shell model calculations.

Authors:
; ;
Publication Date:
Research Org.:
Department of Physics, State University of New York, Stony Brook, New York 11794
OSTI Identifier:
5387199
Resource Type:
Journal Article
Journal Name:
Phys. Rev., C; (United States)
Additional Journal Information:
Journal Volume: 21:5
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTATINE 213; ENERGY LEVELS; LEAD 208 TARGET; LITHIUM 7 REACTIONS; LEAD 210; COMPOUND-NUCLEUS REACTIONS; POLONIUM 212; ALPHA DECAY; ANGULAR DISTRIBUTION; COINCIDENCE SPECTROMETRY; EXCITATION FUNCTIONS; GAMMA SPECTRA; LIFETIME; PARITY; SHELL MODELS; SPIN; ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; ASTATINE ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHARGED-PARTICLE REACTIONS; CROSS SECTIONS; DECAY; DISTRIBUTION; EVEN-EVEN NUCLEI; HEAVY ION REACTIONS; HEAVY NUCLEI; ISOTOPES; LEAD ISOTOPES; MATHEMATICAL MODELS; NANOSEC LIVING RADIOISOTOPES; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; POLONIUM ISOTOPES; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPECTRA; TARGETS; YEARS LIVING RADIOISOTOPES; 651925* - Nuclear Properties & Reactions, A=190-219, Experimental- Nuclear Reactions & Scattering- (-1987); 651923 - Nuclear Properties & Reactions, A=190-219, Experimental- Energy Levels & Transitions- (-1987); 651922 - Nuclear Properties & Reactions, A=190-219, Experimental- Radioactive Decay- (-1987)

Citation Formats

Sjoreen, T P, Garg, U, and Fossan, D B. Spectroscopy of /sup 213/At, /sup 212/Po, and /sup 210/Pb following /sup 208/Pb+/sup 7/Li. United States: N. p., 1980. Web. doi:10.1103/PhysRevC.21.1838.
Sjoreen, T P, Garg, U, & Fossan, D B. Spectroscopy of /sup 213/At, /sup 212/Po, and /sup 210/Pb following /sup 208/Pb+/sup 7/Li. United States. https://doi.org/10.1103/PhysRevC.21.1838
Sjoreen, T P, Garg, U, and Fossan, D B. 1980. "Spectroscopy of /sup 213/At, /sup 212/Po, and /sup 210/Pb following /sup 208/Pb+/sup 7/Li". United States. https://doi.org/10.1103/PhysRevC.21.1838.
@article{osti_5387199,
title = {Spectroscopy of /sup 213/At, /sup 212/Po, and /sup 210/Pb following /sup 208/Pb+/sup 7/Li},
author = {Sjoreen, T P and Garg, U and Fossan, D B},
abstractNote = {The bombardment of /sup 208/Pb by /sup 7/Li ions has been used to study the properties of excited states in /sup 213/At, /sup 212/Po, and /sup 210/Pb. In-beam measurements with Ge(Li), intrinsic Ge, and Si surface barrier detectors of ..cap alpha..-decay excitation functions, ..cap alpha..-..gamma.. coincidences, ..gamma..-..gamma.. coincidences, ..gamma..-ray angular distributions, and pulsed-beam-..gamma.. timing were made to establish decay schemes, level energies, ..gamma..-ray multipolarities, spin-parity assignments, and isomeric lifetimes. Excited states with spins up to 19/2 h in /sup 213/At and 6 h in /sup 212/Po were identified. The mean lifetimes of the 1272-keV 8/sup +/ and 1193-keV 6/sup +/ states in /sup 210/Pb were measured to be 225(22) and 30(10) nsec, respectively. These lifetimes imply B(E2) values of 51(12) e/sup 2/ fm/sup 4/ for the 8/sup +/ state and 308(115) e/sup 2/ fm/sup 4/ for the 6/sup +/ state. The /sup 213/At decay scheme and the /sup 210/Pb B(E2) values are compared with shell model calculations.},
doi = {10.1103/PhysRevC.21.1838},
url = {https://www.osti.gov/biblio/5387199}, journal = {Phys. Rev., C; (United States)},
number = ,
volume = 21:5,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1980},
month = {Thu May 01 00:00:00 EDT 1980}
}