Neutron scattering in sup 189 Os for nucleosynthesis rates of the odd- A Os isotopes and nucleochronology
Neutron elastic and inelastic scattering cross sections have been determined for neutrons incident on {sup 189}Os at three very low energies. Cross sections for scattering to the ground state and 36.2-keV excited level have been measured for incident energies of 63.5 and 73.3 keV, and also to the 69...
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| Veröffentlicht in: | Physical review. C, Nuclear physics Nuclear physics, 1989-08, Vol.40:2 |
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| container_title | Physical review. C, Nuclear physics |
| container_volume | 40:2 |
| creator | McEllistrem, M.T. Winters, R.R. Hershberger, R.L. Cao, Z. Macklin, R.L. Hill, N.W. |
| description | Neutron elastic and inelastic scattering cross sections have been determined for neutrons incident on {sup 189}Os at three very low energies. Cross sections for scattering to the ground state and 36.2-keV excited level have been measured for incident energies of 63.5 and 73.3 keV, and also to the 69.6-keV excited level at 97.5-keV incident energy. These measurements are combined with neutron scattering cross sections for {sup 187}Os, neutron capture cross sections, and other low-energy scattering observables to provide a basis for a single, consistent model of all data for both odd-{ital A} Os isotopes. The properly interpreted capture rates are important for the Re/Os nucleochronology and for {ital s}-process nucleosynthesis rates. The elastic and inelastic scattering cross sections provide a very-low-energy test of statistical model-flux distributions; model accuracy at very low energies is an important issue for reaction rates used in nucleosynthesis estimates. |
| doi_str_mv | 10.1103/PhysRevC.40.591 |
| format | Article |
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Cross sections for scattering to the ground state and 36.2-keV excited level have been measured for incident energies of 63.5 and 73.3 keV, and also to the 69.6-keV excited level at 97.5-keV incident energy. These measurements are combined with neutron scattering cross sections for {sup 187}Os, neutron capture cross sections, and other low-energy scattering observables to provide a basis for a single, consistent model of all data for both odd-{ital A} Os isotopes. The properly interpreted capture rates are important for the Re/Os nucleochronology and for {ital s}-process nucleosynthesis rates. The elastic and inelastic scattering cross sections provide a very-low-energy test of statistical model-flux distributions; model accuracy at very low energies is an important issue for reaction rates used in nucleosynthesis estimates.</description><identifier>ISSN: 0556-2813</identifier><identifier>EISSN: 1089-490X</identifier><identifier>DOI: 10.1103/PhysRevC.40.591</identifier><language>eng</language><publisher>United States</publisher><subject>651820 - Nuclear Properties & Reactions, A=150-189, Experimental ; ANGULAR MOMENTUM ; BARYON REACTIONS ; CAPTURE ; CROSS SECTIONS ; ELASTIC SCATTERING ; ENERGY LEVELS ; ENERGY RANGE ; EVEN-ODD NUCLEI ; HADRON REACTIONS ; HEAVY NUCLEI ; INELASTIC SCATTERING ; ISOTOPES ; KEV RANGE ; KEV RANGE 10-100 ; MATHEMATICAL MODELS ; NEUTRON REACTIONS ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; NUCLEAR REACTIONS ; NUCLEI ; NUCLEON REACTIONS ; NUCLEOSYNTHESIS ; OSMIUM 187 ; OSMIUM 189 TARGET ; OSMIUM ISOTOPES ; PARITY ; PARTICLE PROPERTIES ; S PROCESS ; SCATTERING ; SPIN ; STABLE ISOTOPES ; STAR EVOLUTION ; STATISTICAL MODELS ; SYNTHESIS ; TARGETS</subject><ispartof>Physical review. C, Nuclear physics, 1989-08, Vol.40:2</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/5665566$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>McEllistrem, M.T.</creatorcontrib><creatorcontrib>Winters, R.R.</creatorcontrib><creatorcontrib>Hershberger, R.L.</creatorcontrib><creatorcontrib>Cao, Z.</creatorcontrib><creatorcontrib>Macklin, R.L.</creatorcontrib><creatorcontrib>Hill, N.W.</creatorcontrib><title>Neutron scattering in sup 189 Os for nucleosynthesis rates of the odd- A Os isotopes and nucleochronology</title><title>Physical review. C, Nuclear physics</title><description>Neutron elastic and inelastic scattering cross sections have been determined for neutrons incident on {sup 189}Os at three very low energies. Cross sections for scattering to the ground state and 36.2-keV excited level have been measured for incident energies of 63.5 and 73.3 keV, and also to the 69.6-keV excited level at 97.5-keV incident energy. These measurements are combined with neutron scattering cross sections for {sup 187}Os, neutron capture cross sections, and other low-energy scattering observables to provide a basis for a single, consistent model of all data for both odd-{ital A} Os isotopes. The properly interpreted capture rates are important for the Re/Os nucleochronology and for {ital s}-process nucleosynthesis rates. The elastic and inelastic scattering cross sections provide a very-low-energy test of statistical model-flux distributions; model accuracy at very low energies is an important issue for reaction rates used in nucleosynthesis estimates.</description><subject>651820 - Nuclear Properties & Reactions, A=150-189, Experimental</subject><subject>ANGULAR MOMENTUM</subject><subject>BARYON REACTIONS</subject><subject>CAPTURE</subject><subject>CROSS SECTIONS</subject><subject>ELASTIC SCATTERING</subject><subject>ENERGY LEVELS</subject><subject>ENERGY RANGE</subject><subject>EVEN-ODD NUCLEI</subject><subject>HADRON REACTIONS</subject><subject>HEAVY NUCLEI</subject><subject>INELASTIC SCATTERING</subject><subject>ISOTOPES</subject><subject>KEV RANGE</subject><subject>KEV RANGE 10-100</subject><subject>MATHEMATICAL MODELS</subject><subject>NEUTRON REACTIONS</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>NUCLEAR REACTIONS</subject><subject>NUCLEI</subject><subject>NUCLEON REACTIONS</subject><subject>NUCLEOSYNTHESIS</subject><subject>OSMIUM 187</subject><subject>OSMIUM 189 TARGET</subject><subject>OSMIUM ISOTOPES</subject><subject>PARITY</subject><subject>PARTICLE PROPERTIES</subject><subject>S PROCESS</subject><subject>SCATTERING</subject><subject>SPIN</subject><subject>STABLE ISOTOPES</subject><subject>STAR EVOLUTION</subject><subject>STATISTICAL MODELS</subject><subject>SYNTHESIS</subject><subject>TARGETS</subject><issn>0556-2813</issn><issn>1089-490X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNqNTstqwzAQFKGFuI9zrkvvdqQqFvYxhJaemlB66C0YeR0rGG3wrgP--6qQD-hchmEejFIrowtjtF0f-pm_8LorNrooa7NQmdFVnW9q_XOnMl2WLn-tjF2qB-azTrDWZSp84iQjRWDfiOAY4glCUtMFTFXDnqGjEeLkBySeo_TIgWFsBBmog6SB2jaH7V80MAldktPE9tbxfRqngU7zk7rvmoHx-caP6uX97Xv3kRNLOLIPgr73FCN6OZbOpcPO_iv0C9wATzY</recordid><startdate>19890801</startdate><enddate>19890801</enddate><creator>McEllistrem, M.T.</creator><creator>Winters, R.R.</creator><creator>Hershberger, R.L.</creator><creator>Cao, Z.</creator><creator>Macklin, R.L.</creator><creator>Hill, N.W.</creator><scope>OTOTI</scope></search><sort><creationdate>19890801</creationdate><title>Neutron scattering in sup 189 Os for nucleosynthesis rates of the odd- A Os isotopes and nucleochronology</title><author>McEllistrem, M.T. ; Winters, R.R. ; Hershberger, R.L. ; Cao, Z. ; Macklin, R.L. ; Hill, N.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_56655663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>651820 - Nuclear Properties & Reactions, A=150-189, Experimental</topic><topic>ANGULAR MOMENTUM</topic><topic>BARYON REACTIONS</topic><topic>CAPTURE</topic><topic>CROSS SECTIONS</topic><topic>ELASTIC SCATTERING</topic><topic>ENERGY LEVELS</topic><topic>ENERGY RANGE</topic><topic>EVEN-ODD NUCLEI</topic><topic>HADRON REACTIONS</topic><topic>HEAVY NUCLEI</topic><topic>INELASTIC SCATTERING</topic><topic>ISOTOPES</topic><topic>KEV RANGE</topic><topic>KEV RANGE 10-100</topic><topic>MATHEMATICAL MODELS</topic><topic>NEUTRON REACTIONS</topic><topic>NUCLEAR PHYSICS AND RADIATION PHYSICS</topic><topic>NUCLEAR REACTIONS</topic><topic>NUCLEI</topic><topic>NUCLEON REACTIONS</topic><topic>NUCLEOSYNTHESIS</topic><topic>OSMIUM 187</topic><topic>OSMIUM 189 TARGET</topic><topic>OSMIUM ISOTOPES</topic><topic>PARITY</topic><topic>PARTICLE PROPERTIES</topic><topic>S PROCESS</topic><topic>SCATTERING</topic><topic>SPIN</topic><topic>STABLE ISOTOPES</topic><topic>STAR EVOLUTION</topic><topic>STATISTICAL MODELS</topic><topic>SYNTHESIS</topic><topic>TARGETS</topic><toplevel>online_resources</toplevel><creatorcontrib>McEllistrem, M.T.</creatorcontrib><creatorcontrib>Winters, R.R.</creatorcontrib><creatorcontrib>Hershberger, R.L.</creatorcontrib><creatorcontrib>Cao, Z.</creatorcontrib><creatorcontrib>Macklin, R.L.</creatorcontrib><creatorcontrib>Hill, N.W.</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Physical review. C, Nuclear physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McEllistrem, M.T.</au><au>Winters, R.R.</au><au>Hershberger, R.L.</au><au>Cao, Z.</au><au>Macklin, R.L.</au><au>Hill, N.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Neutron scattering in sup 189 Os for nucleosynthesis rates of the odd- A Os isotopes and nucleochronology</atitle><jtitle>Physical review. C, Nuclear physics</jtitle><date>1989-08-01</date><risdate>1989</risdate><volume>40:2</volume><issn>0556-2813</issn><eissn>1089-490X</eissn><abstract>Neutron elastic and inelastic scattering cross sections have been determined for neutrons incident on {sup 189}Os at three very low energies. Cross sections for scattering to the ground state and 36.2-keV excited level have been measured for incident energies of 63.5 and 73.3 keV, and also to the 69.6-keV excited level at 97.5-keV incident energy. These measurements are combined with neutron scattering cross sections for {sup 187}Os, neutron capture cross sections, and other low-energy scattering observables to provide a basis for a single, consistent model of all data for both odd-{ital A} Os isotopes. The properly interpreted capture rates are important for the Re/Os nucleochronology and for {ital s}-process nucleosynthesis rates. The elastic and inelastic scattering cross sections provide a very-low-energy test of statistical model-flux distributions; model accuracy at very low energies is an important issue for reaction rates used in nucleosynthesis estimates.</abstract><cop>United States</cop><doi>10.1103/PhysRevC.40.591</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0556-2813 |
| ispartof | Physical review. C, Nuclear physics, 1989-08, Vol.40:2 |
| issn | 0556-2813 1089-490X |
| language | eng |
| recordid | cdi_osti_scitechconnect_5665566 |
| source | American Physical Society Journals |
| subjects | 651820 - Nuclear Properties & Reactions, A=150-189, Experimental ANGULAR MOMENTUM BARYON REACTIONS CAPTURE CROSS SECTIONS ELASTIC SCATTERING ENERGY LEVELS ENERGY RANGE EVEN-ODD NUCLEI HADRON REACTIONS HEAVY NUCLEI INELASTIC SCATTERING ISOTOPES KEV RANGE KEV RANGE 10-100 MATHEMATICAL MODELS NEUTRON REACTIONS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS NUCLEI NUCLEON REACTIONS NUCLEOSYNTHESIS OSMIUM 187 OSMIUM 189 TARGET OSMIUM ISOTOPES PARITY PARTICLE PROPERTIES S PROCESS SCATTERING SPIN STABLE ISOTOPES STAR EVOLUTION STATISTICAL MODELS SYNTHESIS TARGETS |
| title | Neutron scattering in sup 189 Os for nucleosynthesis rates of the odd- A Os isotopes and nucleochronology |
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