{Lambda}-hyperon lifetime in very heavy hypernuclei produced in the p+U interaction

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.3062· OSTI ID:509107

Ohm, H; Hermes, T; Borgs, W; Koch, H R; Maier, R; Prasuhn, D; Stein, H J; Schult, O W ^[1]; Pysz, K; Rudy, Z; Jarczyk, L; Kamys, B; Kulessa, P; Strzalkowski, A ^[2]; Cassing, W ^[3]; Uozumi, Y ^[4]; Zychor, I ^[5]

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1. Institut fuer Kernphysik, Forschungszentrum Juelich, D-52425 Juelich (Germany)
2. Institute of Physics, Jagellonian University, PL-30059 Cracow (Poland)
3. Institut fuer Theoretische Physik, Universitaet Giessen, D-35392 Giessen (Germany)
4. Department of Nuclear Engineering, Kyushu University, Fukuoka 812 (Japan)
5. Soltan Institute for Nuclear Studies, PL-05400 Swierk (Poland)

The recoil shadow method for the detection of fission fragments has been used to investigate delayed fission of very heavy {Lambda} hypernuclei produced in the p-U interaction at the projectile energy of 1.5 GeV. From the measured distribution of delayed fission events in the shadow region and the calculated momenta of hypernuclei leaving the target the lifetime of the {Lambda} hyperon in very heavy hypernuclei was determined to be {tau}=2.40{plus_minus}60 ps. The comparison of the number of delayed fission events with that of the prompt events leads to an estimation of the cross section for the production of {Lambda} hypernuclei in p+U collisions at 1.5 GeV of {sigma}{sub Hy}=150{sub {minus}80}{sup +150} {mu}b. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 509107
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
DISTRIBUTION
FISSION FRAGMENTS
HYPERNUCLEI
LAMBDA BARYONS
LIFETIME
PROJECTILES
PROTON REACTIONS
SHADOW EFFECT
SPONTANEOUS FISSION
URANIUM 238 TARGET