Electron-capture delayed fission properties of {sup 242}Es
Electron-capture delayed fission of {sup 242}Es produced via the {sup 233}U({sup 14}N,5n){sup 242}Es reaction at 87 MeV (on target) was observed to decay with a half-life of 11{+-}3 s, consistent with the reported {alpha}-decay half-life of {sup 242}Es of 16{sub -4}{sup +6} s. The mass-yield distrib...
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| Veröffentlicht in: | Physical review. C, Nuclear physics Nuclear physics, 2000-04, Vol.61 (4) |
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| creator | Shaughnessy, D. A. Chemistry Department, University of California, Berkeley, California 94720 Adams, J. L. Gregorich, K. E. Lane, M. R. Laue, C. A. Lee, D. M. McGrath, C. A. Patin, J. B. Strellis, D. A. Sylwester, E. R. Chemistry Department, University of California, Berkeley, California 94720 |
| description | Electron-capture delayed fission of {sup 242}Es produced via the {sup 233}U({sup 14}N,5n){sup 242}Es reaction at 87 MeV (on target) was observed to decay with a half-life of 11{+-}3 s, consistent with the reported {alpha}-decay half-life of {sup 242}Es of 16{sub -4}{sup +6} s. The mass-yield distribution of the fission fragments is highly asymmetric. The average pre-neutron emission total kinetic energy of the fragments was measured to be 183{+-}18 MeV. Based on the ratio of the measured number of fission events to the measured number of {alpha} decays from the electron-capture daughter {sup 242}Cf (100% {alpha} branch), the probability of delayed fission was determined to be 0.006{+-}0.002. This value for the delayed fission probability fits the experimental trend of increasing delayed fission probability with increasing Q value for electron capture. (c) 2000 The American Physical Society. |
| doi_str_mv | 10.1103/PhysRevC.61.044609 |
| format | Article |
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A. ; Chemistry Department, University of California, Berkeley, California 94720 ; Adams, J. L. ; Gregorich, K. E. ; Lane, M. R. ; Laue, C. A. ; Lee, D. M. ; McGrath, C. A. ; Patin, J. B. ; Strellis, D. A. ; Sylwester, E. R. ; Chemistry Department, University of California, Berkeley, California 94720</creator><creatorcontrib>Shaughnessy, D. A. ; Chemistry Department, University of California, Berkeley, California 94720 ; Adams, J. L. ; Gregorich, K. E. ; Lane, M. R. ; Laue, C. A. ; Lee, D. M. ; McGrath, C. A. ; Patin, J. B. ; Strellis, D. A. ; Sylwester, E. R. ; Chemistry Department, University of California, Berkeley, California 94720</creatorcontrib><description>Electron-capture delayed fission of {sup 242}Es produced via the {sup 233}U({sup 14}N,5n){sup 242}Es reaction at 87 MeV (on target) was observed to decay with a half-life of 11{+-}3 s, consistent with the reported {alpha}-decay half-life of {sup 242}Es of 16{sub -4}{sup +6} s. The mass-yield distribution of the fission fragments is highly asymmetric. The average pre-neutron emission total kinetic energy of the fragments was measured to be 183{+-}18 MeV. Based on the ratio of the measured number of fission events to the measured number of {alpha} decays from the electron-capture daughter {sup 242}Cf (100% {alpha} branch), the probability of delayed fission was determined to be 0.006{+-}0.002. This value for the delayed fission probability fits the experimental trend of increasing delayed fission probability with increasing Q value for electron capture. 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A.</creatorcontrib><creatorcontrib>Chemistry Department, University of California, Berkeley, California 94720</creatorcontrib><creatorcontrib>Adams, J. L.</creatorcontrib><creatorcontrib>Gregorich, K. E.</creatorcontrib><creatorcontrib>Lane, M. R.</creatorcontrib><creatorcontrib>Laue, C. A.</creatorcontrib><creatorcontrib>Lee, D. M.</creatorcontrib><creatorcontrib>McGrath, C. A.</creatorcontrib><creatorcontrib>Patin, J. B.</creatorcontrib><creatorcontrib>Strellis, D. A.</creatorcontrib><creatorcontrib>Sylwester, E. R.</creatorcontrib><creatorcontrib>Chemistry Department, University of California, Berkeley, California 94720</creatorcontrib><title>Electron-capture delayed fission properties of {sup 242}Es</title><title>Physical review. C, Nuclear physics</title><description>Electron-capture delayed fission of {sup 242}Es produced via the {sup 233}U({sup 14}N,5n){sup 242}Es reaction at 87 MeV (on target) was observed to decay with a half-life of 11{+-}3 s, consistent with the reported {alpha}-decay half-life of {sup 242}Es of 16{sub -4}{sup +6} s. The mass-yield distribution of the fission fragments is highly asymmetric. The average pre-neutron emission total kinetic energy of the fragments was measured to be 183{+-}18 MeV. Based on the ratio of the measured number of fission events to the measured number of {alpha} decays from the electron-capture daughter {sup 242}Cf (100% {alpha} branch), the probability of delayed fission was determined to be 0.006{+-}0.002. This value for the delayed fission probability fits the experimental trend of increasing delayed fission probability with increasing Q value for electron capture. (c) 2000 The American Physical Society.</description><subject>ALPHA DECAY</subject><subject>EINSTEINIUM ISOTOPES</subject><subject>ELECTRON CAPTURE</subject><subject>EXPERIMENTAL DATA</subject><subject>FISSION</subject><subject>HALF-LIFE</subject><subject>NEUTRON EMISSION</subject><subject>NITROGEN 14 REACTIONS</subject><subject>NUCLEAR PHYSICS AND RADIATION PHYSICS</subject><subject>URANIUM 233 TARGET</subject><issn>0556-2813</issn><issn>1089-490X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNotjktLxDAYAIMoWFf_gKeA59R8SZqHNyn1AQvKrgdvS8yDrZSmNFlhEf-7BZ3L3IZB6BpoDUD57ev-mDfhq60l1FQISc0JqoBqQ4Sh76eook0jCdPAz9FFzp90gXNZobtuCK7MaSTOTuUwB-zDYI_B49jn3KcRT3Oawlz6kHGK-DsfJswE--nyJTqLdsjh6t8rtH3o3tonsn55fG7v1yQZXYhX2rhGL_KeWy6dUMzb6BVl3lnhleMQWRTGU65AAOPRCfCssQbYh-QrdPNXTbn0u-z6EtzepXFctneMMmi0UfwXOUVKcA</recordid><startdate>20000401</startdate><enddate>20000401</enddate><creator>Shaughnessy, D. A.</creator><creator>Chemistry Department, University of California, Berkeley, California 94720</creator><creator>Adams, J. L.</creator><creator>Gregorich, K. E.</creator><creator>Lane, M. R.</creator><creator>Laue, C. A.</creator><creator>Lee, D. M.</creator><creator>McGrath, C. A.</creator><creator>Patin, J. B.</creator><creator>Strellis, D. A.</creator><creator>Sylwester, E. R.</creator><creator>Chemistry Department, University of California, Berkeley, California 94720</creator><scope>OTOTI</scope></search><sort><creationdate>20000401</creationdate><title>Electron-capture delayed fission properties of {sup 242}Es</title><author>Shaughnessy, D. A. ; Chemistry Department, University of California, Berkeley, California 94720 ; Adams, J. L. ; Gregorich, K. E. ; Lane, M. R. ; Laue, C. A. ; Lee, D. M. ; McGrath, C. A. ; Patin, J. B. ; Strellis, D. A. ; Sylwester, E. 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R.</creatorcontrib><creatorcontrib>Laue, C. A.</creatorcontrib><creatorcontrib>Lee, D. M.</creatorcontrib><creatorcontrib>McGrath, C. A.</creatorcontrib><creatorcontrib>Patin, J. B.</creatorcontrib><creatorcontrib>Strellis, D. A.</creatorcontrib><creatorcontrib>Sylwester, E. R.</creatorcontrib><creatorcontrib>Chemistry Department, University of California, Berkeley, California 94720</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>Shaughnessy, D. A.</au><au>Chemistry Department, University of California, Berkeley, California 94720</au><au>Adams, J. L.</au><au>Gregorich, K. E.</au><au>Lane, M. R.</au><au>Laue, C. A.</au><au>Lee, D. M.</au><au>McGrath, C. A.</au><au>Patin, J. B.</au><au>Strellis, D. A.</au><au>Sylwester, E. R.</au><au>Chemistry Department, University of California, Berkeley, California 94720</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electron-capture delayed fission properties of {sup 242}Es</atitle><jtitle>Physical review. C, Nuclear physics</jtitle><date>2000-04-01</date><risdate>2000</risdate><volume>61</volume><issue>4</issue><issn>0556-2813</issn><eissn>1089-490X</eissn><abstract>Electron-capture delayed fission of {sup 242}Es produced via the {sup 233}U({sup 14}N,5n){sup 242}Es reaction at 87 MeV (on target) was observed to decay with a half-life of 11{+-}3 s, consistent with the reported {alpha}-decay half-life of {sup 242}Es of 16{sub -4}{sup +6} s. The mass-yield distribution of the fission fragments is highly asymmetric. The average pre-neutron emission total kinetic energy of the fragments was measured to be 183{+-}18 MeV. Based on the ratio of the measured number of fission events to the measured number of {alpha} decays from the electron-capture daughter {sup 242}Cf (100% {alpha} branch), the probability of delayed fission was determined to be 0.006{+-}0.002. This value for the delayed fission probability fits the experimental trend of increasing delayed fission probability with increasing Q value for electron capture. (c) 2000 The American Physical Society.</abstract><cop>United States</cop><doi>10.1103/PhysRevC.61.044609</doi></addata></record> |
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| subjects | ALPHA DECAY EINSTEINIUM ISOTOPES ELECTRON CAPTURE EXPERIMENTAL DATA FISSION HALF-LIFE NEUTRON EMISSION NITROGEN 14 REACTIONS NUCLEAR PHYSICS AND RADIATION PHYSICS URANIUM 233 TARGET |
| title | Electron-capture delayed fission properties of {sup 242}Es |
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