Isobaric analog impurities from neutron capture and transmission by magnesium
Resonance neutron interactions with the stable isotopes of magnesium were measured at the Oak Ridge Electron Linear Accelerator time-of-flight facility. The transmission of a natural metal sample (78.7% /sup 24/Mg) was measured at 200 m, and capture by natural metal and by enriched isotope samples w...
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| Veröffentlicht in: | Phys. Rev., C; (United States) C; (United States), 1976-10, Vol.14 (4), p.1328-1335 |
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| creator | Weigmann, H. Macklin, R. L. Harvey, J. A. |
| description | Resonance neutron interactions with the stable isotopes of magnesium were measured at the Oak Ridge Electron Linear Accelerator time-of-flight facility. The transmission of a natural metal sample (78.7% /sup 24/Mg) was measured at 200 m, and capture by natural metal and by enriched isotope samples was measured at 40 m. Twenty-six resonances in /sup 24/Mg + n up to 1.8 MeV were fitted with Breit--Wigner multilevel parameters. The data were sufficient to assign spin and parity to 19 of these. The capture data were analyzed for resonances up to 850 keV for /sup 24/Mg + n, 265 keV for /sup 25/Mg + n (17/sup +/ resonances), and 440 keV for /sup 26/Mg + n (4 resonances). Average capture at stellar interior temperatures was calculated. The /sup 24/Mg + n data serve to assess the isospin impurities in three isobaric analog states. Three other states exhibit reduced neutron widths, each several percent of the Wigner limit, which may be understood in terms of simple shell model configurations. (AIP) |
| doi_str_mv | 10.1103/PhysRevC.14.1328 |
| format | Article |
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L. ; Harvey, J. A.</creator><creatorcontrib>Weigmann, H. ; Macklin, R. L. ; Harvey, J. A. ; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830</creatorcontrib><description>Resonance neutron interactions with the stable isotopes of magnesium were measured at the Oak Ridge Electron Linear Accelerator time-of-flight facility. The transmission of a natural metal sample (78.7% /sup 24/Mg) was measured at 200 m, and capture by natural metal and by enriched isotope samples was measured at 40 m. Twenty-six resonances in /sup 24/Mg + n up to 1.8 MeV were fitted with Breit--Wigner multilevel parameters. The data were sufficient to assign spin and parity to 19 of these. The capture data were analyzed for resonances up to 850 keV for /sup 24/Mg + n, 265 keV for /sup 25/Mg + n (17/sup +/ resonances), and 440 keV for /sup 26/Mg + n (4 resonances). Average capture at stellar interior temperatures was calculated. The /sup 24/Mg + n data serve to assess the isospin impurities in three isobaric analog states. Three other states exhibit reduced neutron widths, each several percent of the Wigner limit, which may be understood in terms of simple shell model configurations. 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A.</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830</creatorcontrib><title>Isobaric analog impurities from neutron capture and transmission by magnesium</title><title>Phys. Rev., C; (United States)</title><description>Resonance neutron interactions with the stable isotopes of magnesium were measured at the Oak Ridge Electron Linear Accelerator time-of-flight facility. The transmission of a natural metal sample (78.7% /sup 24/Mg) was measured at 200 m, and capture by natural metal and by enriched isotope samples was measured at 40 m. Twenty-six resonances in /sup 24/Mg + n up to 1.8 MeV were fitted with Breit--Wigner multilevel parameters. The data were sufficient to assign spin and parity to 19 of these. The capture data were analyzed for resonances up to 850 keV for /sup 24/Mg + n, 265 keV for /sup 25/Mg + n (17/sup +/ resonances), and 440 keV for /sup 26/Mg + n (4 resonances). Average capture at stellar interior temperatures was calculated. The /sup 24/Mg + n data serve to assess the isospin impurities in three isobaric analog states. Three other states exhibit reduced neutron widths, each several percent of the Wigner limit, which may be understood in terms of simple shell model configurations. (AIP)</description><subject>651423 - Nuclear Properties & Reactions, A=20-38, Experimental- Energy Levels & Transitions- (-1987)</subject><subject>651425 - Nuclear Properties & Reactions, A=20-38, Experimental- Nuclear Reactions & Scattering- (-1987)</subject><subject>654003 - Radiation & Shielding Physics- Neutron Interactions with Matter</subject><subject>ALKALINE EARTH ISOTOPES</subject><subject>ALKALINE EARTH METALS</subject><subject>ANGULAR MOMENTUM</subject><subject>BARYON REACTIONS</subject><subject>BARYONS</subject><subject>BETA DECAY RADIOISOTOPES</subject><subject>BETA-MINUS DECAY RADIOISOTOPES</subject><subject>BREIT-WIGNER FORMULA</subject><subject>CAPTURE</subject><subject>CROSS SECTIONS</subject><subject>ELEMENTARY PARTICLES</subject><subject>ELEMENTS</subject><subject>ENERGY LEVELS</subject><subject>EVEN-EVEN NUCLEI</subject><subject>EVEN-ODD NUCLEI</subject><subject>FERMIONS</subject><subject>HADRON REACTIONS</subject><subject>HADRONS</subject><subject>ISOBARIC ANALOGS</subject><subject>ISOSPIN</subject><subject>ISOTOPES</subject><subject>LIGHT NUCLEI</subject><subject>MAGNESIUM</subject><subject>MAGNESIUM 24 TARGET</subject><subject>MAGNESIUM 25</subject><subject>MAGNESIUM 25 TARGET</subject><subject>MAGNESIUM 26</subject><subject>MAGNESIUM 26 TARGET</subject><subject>MAGNESIUM 27</subject><subject>MAGNESIUM ISOTOPES</subject><subject>MATHEMATICAL MODELS</subject><subject>METALS</subject><subject>MINUTES LIVING RADIOISOTOPES</subject><subject>NEUTRAL-PARTICLE TRANSPORT</subject><subject>NEUTRON REACTIONS</subject><subject>NEUTRON TRANSPORT</subject><subject>NEUTRONS</subject><subject>NUCLEAR MODELS</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>NUCLEAR REACTIONS</subject><subject>NUCLEI</subject><subject>NUCLEON REACTIONS</subject><subject>NUCLEONS</subject><subject>PARITY</subject><subject>PARTICLE PROPERTIES</subject><subject>RADIATION TRANSPORT</subject><subject>RADIOISOTOPES</subject><subject>RESONANCE</subject><subject>SHELL MODELS</subject><subject>SPIN</subject><subject>STABLE ISOTOPES</subject><subject>STARS</subject><subject>TARGETS</subject><subject>TRANSMISSION</subject><issn>0556-2813</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1976</creationdate><recordtype>article</recordtype><recordid>eNo1kDlPAzEUhF2ARDh6Sot-g6-9ShRxRAoCofSW9-VtYpS1Iz8vUv49GwWmmWI-TfExdi_FXEqhHz93R_rCn8VcmrnUqrlgM1GWVaEaqa_YNdG3mKJ1NWPvS4qdSx64C24ft9wPhzH57JF4n-LAA445xcDBHfKYcMI2PCcXaPBEfhq6Ix_cNiD5cbhll73bE9799Q1bvzyvF2_F6uN1uXhaFaC1yYXpoW1VqypEI6DVleyMUI3Y6NrUHZQtyBqVBlROtU5C1U2IBNVjXZcO9Q17ON9Gyt4S-IywgxgCQra1qmQpmgkSZwhSJErY20Pyg0tHK4U9abL_mqw09qRJ_wIj8l_A</recordid><startdate>19761001</startdate><enddate>19761001</enddate><creator>Weigmann, H.</creator><creator>Macklin, R. L.</creator><creator>Harvey, J. A.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19761001</creationdate><title>Isobaric analog impurities from neutron capture and transmission by magnesium</title><author>Weigmann, H. ; Macklin, R. L. ; Harvey, J. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-4fc992926ee40c9361b40280d3747bc59c17e23ce2a29a1c6b3611c2fe775ae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1976</creationdate><topic>651423 - Nuclear Properties & Reactions, A=20-38, Experimental- Energy Levels & Transitions- (-1987)</topic><topic>651425 - Nuclear Properties & Reactions, A=20-38, Experimental- Nuclear Reactions & Scattering- (-1987)</topic><topic>654003 - Radiation & Shielding Physics- Neutron Interactions with Matter</topic><topic>ALKALINE EARTH ISOTOPES</topic><topic>ALKALINE EARTH METALS</topic><topic>ANGULAR MOMENTUM</topic><topic>BARYON REACTIONS</topic><topic>BARYONS</topic><topic>BETA DECAY RADIOISOTOPES</topic><topic>BETA-MINUS DECAY RADIOISOTOPES</topic><topic>BREIT-WIGNER FORMULA</topic><topic>CAPTURE</topic><topic>CROSS SECTIONS</topic><topic>ELEMENTARY PARTICLES</topic><topic>ELEMENTS</topic><topic>ENERGY LEVELS</topic><topic>EVEN-EVEN NUCLEI</topic><topic>EVEN-ODD NUCLEI</topic><topic>FERMIONS</topic><topic>HADRON REACTIONS</topic><topic>HADRONS</topic><topic>ISOBARIC ANALOGS</topic><topic>ISOSPIN</topic><topic>ISOTOPES</topic><topic>LIGHT NUCLEI</topic><topic>MAGNESIUM</topic><topic>MAGNESIUM 24 TARGET</topic><topic>MAGNESIUM 25</topic><topic>MAGNESIUM 25 TARGET</topic><topic>MAGNESIUM 26</topic><topic>MAGNESIUM 26 TARGET</topic><topic>MAGNESIUM 27</topic><topic>MAGNESIUM ISOTOPES</topic><topic>MATHEMATICAL MODELS</topic><topic>METALS</topic><topic>MINUTES LIVING RADIOISOTOPES</topic><topic>NEUTRAL-PARTICLE TRANSPORT</topic><topic>NEUTRON REACTIONS</topic><topic>NEUTRON TRANSPORT</topic><topic>NEUTRONS</topic><topic>NUCLEAR MODELS</topic><topic>NUCLEAR PHYSICS AND RADIATION PHYSICS</topic><topic>NUCLEAR REACTIONS</topic><topic>NUCLEI</topic><topic>NUCLEON REACTIONS</topic><topic>NUCLEONS</topic><topic>PARITY</topic><topic>PARTICLE PROPERTIES</topic><topic>RADIATION TRANSPORT</topic><topic>RADIOISOTOPES</topic><topic>RESONANCE</topic><topic>SHELL MODELS</topic><topic>SPIN</topic><topic>STABLE ISOTOPES</topic><topic>STARS</topic><topic>TARGETS</topic><topic>TRANSMISSION</topic><toplevel>online_resources</toplevel><creatorcontrib>Weigmann, H.</creatorcontrib><creatorcontrib>Macklin, R. L.</creatorcontrib><creatorcontrib>Harvey, J. A.</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Phys. Rev., C; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Weigmann, H.</au><au>Macklin, R. L.</au><au>Harvey, J. A.</au><aucorp>Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Isobaric analog impurities from neutron capture and transmission by magnesium</atitle><jtitle>Phys. Rev., C; (United States)</jtitle><date>1976-10-01</date><risdate>1976</risdate><volume>14</volume><issue>4</issue><spage>1328</spage><epage>1335</epage><pages>1328-1335</pages><issn>0556-2813</issn><abstract>Resonance neutron interactions with the stable isotopes of magnesium were measured at the Oak Ridge Electron Linear Accelerator time-of-flight facility. The transmission of a natural metal sample (78.7% /sup 24/Mg) was measured at 200 m, and capture by natural metal and by enriched isotope samples was measured at 40 m. Twenty-six resonances in /sup 24/Mg + n up to 1.8 MeV were fitted with Breit--Wigner multilevel parameters. The data were sufficient to assign spin and parity to 19 of these. The capture data were analyzed for resonances up to 850 keV for /sup 24/Mg + n, 265 keV for /sup 25/Mg + n (17/sup +/ resonances), and 440 keV for /sup 26/Mg + n (4 resonances). Average capture at stellar interior temperatures was calculated. The /sup 24/Mg + n data serve to assess the isospin impurities in three isobaric analog states. Three other states exhibit reduced neutron widths, each several percent of the Wigner limit, which may be understood in terms of simple shell model configurations. (AIP)</abstract><cop>United States</cop><doi>10.1103/PhysRevC.14.1328</doi><tpages>8</tpages></addata></record> |
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| subjects | 651423 - Nuclear Properties & Reactions, A=20-38, Experimental- Energy Levels & Transitions- (-1987) 651425 - Nuclear Properties & Reactions, A=20-38, Experimental- Nuclear Reactions & Scattering- (-1987) 654003 - Radiation & Shielding Physics- Neutron Interactions with Matter ALKALINE EARTH ISOTOPES ALKALINE EARTH METALS ANGULAR MOMENTUM BARYON REACTIONS BARYONS BETA DECAY RADIOISOTOPES BETA-MINUS DECAY RADIOISOTOPES BREIT-WIGNER FORMULA CAPTURE CROSS SECTIONS ELEMENTARY PARTICLES ELEMENTS ENERGY LEVELS EVEN-EVEN NUCLEI EVEN-ODD NUCLEI FERMIONS HADRON REACTIONS HADRONS ISOBARIC ANALOGS ISOSPIN ISOTOPES LIGHT NUCLEI MAGNESIUM MAGNESIUM 24 TARGET MAGNESIUM 25 MAGNESIUM 25 TARGET MAGNESIUM 26 MAGNESIUM 26 TARGET MAGNESIUM 27 MAGNESIUM ISOTOPES MATHEMATICAL MODELS METALS MINUTES LIVING RADIOISOTOPES NEUTRAL-PARTICLE TRANSPORT NEUTRON REACTIONS NEUTRON TRANSPORT NEUTRONS NUCLEAR MODELS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS NUCLEI NUCLEON REACTIONS NUCLEONS PARITY PARTICLE PROPERTIES RADIATION TRANSPORT RADIOISOTOPES RESONANCE SHELL MODELS SPIN STABLE ISOTOPES STARS TARGETS TRANSMISSION |
| title | Isobaric analog impurities from neutron capture and transmission by magnesium |
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