Prompt neutron emission from the spontaneous fission of sup 260 Md

Journal Article · Thu Feb 01 00:00:00 EST 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.640· OSTI ID:7102639

Wild, J F; van Aarle, J; Westmeier, W; Lougheed, R W; Hulet, E K; Moody, K J; Dougan, R J; Koop, E; Glaser, R E; Brandt, R; Patzelt, P ^[1]

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1. University of California, Lawrence Livermore National Laboratory, Livermore California 94551 (US) Philipps University, D-3550, Marburg an der Lahn, (Federal Republic of Germany)

We have made the first measurement of the number of neutrons emitted from the spontaneous fission of a nuclide in which very high fragment energies dominate the fission process. In bombardments of {sup 254}Es, we produced a large sample of 28-d {sup 260}Md, which was neutron counted in a 1-m-diameter spherical tank containing a Gd-doped scintillator solution. The average number of neutrons emitted per fission is only 2.58{plus minus}0.11, substantially less than for other actinides. A linear dependence of neutron multiplicity on fragment-excitation energy is observed to the highest values of total kinetic energy.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7102639
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 41:2; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
MENDELEVIUM 260
SPONTANEOUS FISSION
CYCLOTRONS
EINSTEINIUM 254 TARGET
EXPERIMENTAL DATA
FISSION FRAGMENTS
GADOLINIUM
KINETIC ENERGY
MASS SPECTRA
MEV RANGE 100-1000
MULTIPLICITY
NEON 22 REACTIONS
NEUTRON EMISSION
PROMPT NEUTRONS
Q-VALUE
ACCELERATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
BARYONS
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
DATA
DECAY
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY
ENERGY RANGE
FERMIONS
FISSION
FISSION NEUTRONS
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
ISOTOPES
MENDELEVIUM ISOTOPES
METALS
MEV RANGE
NEUTRONS
NUCLEAR DECAY
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-ODD NUCLEI
RARE EARTHS
SPECTRA
TARGETS
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental