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Title: THE NUCLEUS Y$sup 88$ AND THE Y$sup 88$-Sr$sup 88$ MASS DIFFERENCE

Abstract

The Y/sup 88/-Sr/sup 88/ mass difference was determined by measuring threshold energies for Sr/sup 88(p,n)Y/sup 88/(4454 plus or minus 6) kev and er value when combined with the determination of the Y/sup 88*/ ( gamma ) energy (393 plus or minus 1) kev leads to a ground state threshold energy of 4450 plus or minus 6 kev. These measurements result in an Y/sup 88/-Sr/sup 88/ mass difference of 36l9 plus or minus 6 kev. In order to understand a 200-kev discrepancy between the (p,n) threshold energy and the Y/sup 88/( beta /sup +/Sr/ sup 88* end-point energy, searches were made for a (p,n) threshold at bombarding energies of 4.1 to 4.45 Mev, but none was found. A search was also made for a gamma -ray in the neighborhood of 200 kev. No evidence for new states in Y/sup 88/ or Sr/sup 88/ was found. Comparison with experiment of theoretical capture- to-positon ratios for the transition from Y/sup 88/ to the l837-kev state of Sr/ sup 88/ based on the above mass difference and a study of log ft values for this transition favor spin and parity assignments of 4- and l+ for the Y/sup 88/ ground and first excited states,more » respectively. (auth)« less

Authors:
Publication Date:
Research Org.:
Franklin Inst., Swarthmore, Penna.
Sponsoring Org.:
USDOE
OSTI Identifier:
4819518
NSA Number:
NSA-16-007078
Resource Type:
Journal Article
Journal Name:
Nuclear Phys.
Additional Journal Information:
Journal Volume: Vol: 28; Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
PHYSICS; CALCIUM CARBONATES; CAPTURE; CROSS SECTIONS; CRYSTALS; DENSITY; ENERGY; ENERGY LEVELS; ENERGY RANGE; EXCITATION; GADOLINIUM; GAMMA RADIATION; GOLD; IMPURITIES; LUTETIUM; MASS; MEASURED VALUES; MEV RANGE; NEUTRON SPECTROMETERS; NEUTRONS; NUCLEAR MAGNETIC RESONANCE; OXIDES; PARITY; PRASEODYMIUM; PROTON BEAMS; REFLECTION; SAMARIUM; SPIN; STRONTIUM 88; YTTERBIUM; YTTRIUM 88

Citation Formats

Shafroth, S M. THE NUCLEUS Y$sup 88$ AND THE Y$sup 88$-Sr$sup 88$ MASS DIFFERENCE. Country unknown/Code not available: N. p., 1961. Web. doi:10.1016/0029-5582(61)91085-9.
Shafroth, S M. THE NUCLEUS Y$sup 88$ AND THE Y$sup 88$-Sr$sup 88$ MASS DIFFERENCE. Country unknown/Code not available. doi:10.1016/0029-5582(61)91085-9.
Shafroth, S M. Sun . "THE NUCLEUS Y$sup 88$ AND THE Y$sup 88$-Sr$sup 88$ MASS DIFFERENCE". Country unknown/Code not available. doi:10.1016/0029-5582(61)91085-9.
@article{osti_4819518,
title = {THE NUCLEUS Y$sup 88$ AND THE Y$sup 88$-Sr$sup 88$ MASS DIFFERENCE},
author = {Shafroth, S M},
abstractNote = {The Y/sup 88/-Sr/sup 88/ mass difference was determined by measuring threshold energies for Sr/sup 88(p,n)Y/sup 88/(4454 plus or minus 6) kev and er value when combined with the determination of the Y/sup 88*/ ( gamma ) energy (393 plus or minus 1) kev leads to a ground state threshold energy of 4450 plus or minus 6 kev. These measurements result in an Y/sup 88/-Sr/sup 88/ mass difference of 36l9 plus or minus 6 kev. In order to understand a 200-kev discrepancy between the (p,n) threshold energy and the Y/sup 88/( beta /sup +/Sr/ sup 88* end-point energy, searches were made for a (p,n) threshold at bombarding energies of 4.1 to 4.45 Mev, but none was found. A search was also made for a gamma -ray in the neighborhood of 200 kev. No evidence for new states in Y/sup 88/ or Sr/sup 88/ was found. Comparison with experiment of theoretical capture- to-positon ratios for the transition from Y/sup 88/ to the l837-kev state of Sr/ sup 88/ based on the above mass difference and a study of log ft values for this transition favor spin and parity assignments of 4- and l+ for the Y/sup 88/ ground and first excited states, respectively. (auth)},
doi = {10.1016/0029-5582(61)91085-9},
journal = {Nuclear Phys.},
number = ,
volume = Vol: 28,
place = {Country unknown/Code not available},
year = {1961},
month = {1}
}