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Title: Laser spectroscopy of radioactive barium and strontium isotopes

Abstract

An atomic beam system and a high resolution computer controlled dye laser system were developed to perform isotope shift measurements on accelerator-produced radioactive isotopes. Two different techniques were used to transport the radioactive isotopes to the laser interaction region. The first technique was based on the thermalization and deionization of the nuclear reaction products in a helium buffer gas. The reaction products were subsequently transported in the gas to the laser beam along a capillary tube. This technique suffered from problems with chemical reactions between impurities in the buffer gas and the reaction products and proved to be unsuccessful. The second technique was based on the implantation of the reaction products into a metal lattice. Subsequent heating of the metal lattice released the implanted ions from which an atomic beam was formed. The photon burst technique was used to enable detection of the extremely weak atomic beams formed in this manner. Measurements were performed of the known isotope shifts of radioactive /sup 128/Ba and /sup 126/Ba to test the sensitivity of the system. The previously unmeasured isotope shift of radioactive /sup 82/Sr also was determined, and the result obtained was compared to predictions using the droplet model.

Authors:
Publication Date:
Research Org.:
Rochester Univ., NY (USA)
OSTI Identifier:
6266953
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BARIUM; SPECTRAL SHIFT; STRONTIUM; BARIUM 126; BARIUM 128; DROPLET MODEL; DYE LASERS; EXPERIMENTAL DATA; ION IMPLANTATION; LASER SPECTROSCOPY; METALS; SENSITIVITY; STRONTIUM 82; ALKALINE EARTH ISOTOPES; ALKALINE EARTH METALS; BARIUM ISOTOPES; BETA DECAY RADIOISOTOPES; DATA; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; HOURS LIVING RADIOISOTOPES; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; LASERS; LIQUID LASERS; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; SPECTROSCOPY; STRONTIUM ISOTOPES; 640302* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory

Citation Formats

Martin, A G. Laser spectroscopy of radioactive barium and strontium isotopes. United States: N. p., 1986. Web.
Martin, A G. Laser spectroscopy of radioactive barium and strontium isotopes. United States.
Martin, A G. 1986. "Laser spectroscopy of radioactive barium and strontium isotopes". United States.
@article{osti_6266953,
title = {Laser spectroscopy of radioactive barium and strontium isotopes},
author = {Martin, A G},
abstractNote = {An atomic beam system and a high resolution computer controlled dye laser system were developed to perform isotope shift measurements on accelerator-produced radioactive isotopes. Two different techniques were used to transport the radioactive isotopes to the laser interaction region. The first technique was based on the thermalization and deionization of the nuclear reaction products in a helium buffer gas. The reaction products were subsequently transported in the gas to the laser beam along a capillary tube. This technique suffered from problems with chemical reactions between impurities in the buffer gas and the reaction products and proved to be unsuccessful. The second technique was based on the implantation of the reaction products into a metal lattice. Subsequent heating of the metal lattice released the implanted ions from which an atomic beam was formed. The photon burst technique was used to enable detection of the extremely weak atomic beams formed in this manner. Measurements were performed of the known isotope shifts of radioactive /sup 128/Ba and /sup 126/Ba to test the sensitivity of the system. The previously unmeasured isotope shift of radioactive /sup 82/Sr also was determined, and the result obtained was compared to predictions using the droplet model.},
doi = {},
url = {https://www.osti.gov/biblio/6266953}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}

Thesis/Dissertation:
Other availability
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