Electron-capture delayed fission properties of 242Es -: art. no. 044609

被引：22
|
作者：
Shaughnessy, DA
Adams, JL
Gregorich, KE
Lane, MR
Laue, CA
Lee, DM
McGrath, CA
Patin, JB
Stellis, DA
Sylwester, ER
Wilk, PA
Hoffman, DC
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW C | 2000年 / 61卷 / 04期
关键词：
D O I：
10.1103/PhysRevC.61.044609
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Electron-capture delayed fission of Es-242 produced via the U-233(N-14,5n)Es-242 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 Es-242 of 16(-4)(+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 cu decays from the electron-capture daughter Cf-242 (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.
引用
收藏
页数：6
相关论文
共 50 条
  • [41] Surface-plasmon-assisted electron-capture mechanism in low-energy He+(1s)-Al(111) collisions (vol 63, art no 052901, 2001) -: art. no. 019901
    Jouin, H
    Gutierrez, FA
    Harel, C
    PHYSICAL REVIEW A, 2002, 66 (01):
  • [42] Proton emission following multiple electron capture in slow N7++HCl collisions -: art. no. 042706
    Frémont, F
    Martina, D
    Kamalou, O
    Sobocinski, P
    Chesnel, JY
    McNab, IR
    Bennett, FR
    PHYSICAL REVIEW A, 2005, 71 (04):
  • [43] State-selective single and double electron capture in the collision of N4+ with He -: art. no. 042721
    Tergiman, YS
    Bacchus-Montabonel, MC
    PHYSICAL REVIEW A, 2001, 64 (04): : 4
  • [44] Radiative electron capture at ultrarelativistic energies:: 33-TeV Pb82+ ions -: art. no. 010701
    Vane, CR
    Krause, HF
    Datz, S
    Grafström, P
    Knudsen, H
    Scheidenberger, C
    Schuch, RH
    PHYSICAL REVIEW A, 2000, 62 (01): : 4
  • [45] Single-electron capture and transfer ionization in collisions of Li3+ ions with helium - art. no. 012708
    Mancev, I
    PHYSICAL REVIEW A, 2001, 64 (01) : 8
  • [46] Collision mechanisms in one-electron capture by He2+ ions in collisions with hydrocarbons -: art. no. 022713
    Seredyuk, B
    McCullough, RW
    Gilbody, HB
    PHYSICAL REVIEW A, 2005, 71 (02):
  • [47] Total and state-selective electron capture cross sections for B4++Hcollisions -: art. no. 034701
    Tseng, HC
    Lin, CD
    PHYSICAL REVIEW A, 2000, 61 (03): : 3
  • [48] Application of radiative electron capture for the diagnostics of spin-polarized ion beams at storage rings -: art. no. 203202
    Surzhykov, A
    Fritzsche, S
    Stöhlker, T
    Tashenov, S
    PHYSICAL REVIEW LETTERS, 2005, 94 (20) : 1 - 4
  • [49] First observation of 109Te β+ and electron capture decay to levels of 109Sb -: art. no. 024308
    Ressler, JJ
    Walters, WB
    Davids, CN
    Dean, DJ
    Heinz, A
    Hjorth-Jensen, M
    Seweryniak, D
    Shergur, J
    PHYSICAL REVIEW C, 2002, 66 (02)
  • [50] A statistical study of wave properties and electron density at 1700 km in the auroral region -: art. no. 1204
    Hamrin, M
    Norqvist, P
    André, M
    Eriksson, AI
    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2002, 107 (A8)
12345