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单词 quasifission
释义

quasifissionn.

Brit. /ˈkweɪzʌɪˌfɪʃn/, /ˈkwɑːzɪˌfɪʃn/, U.S. /ˈkwɑziˌfɪʃ(ə)n/, /ˈkweɪˌzaɪˌfɪʃ(ə)n/, /ˈkwɑziˌfɪʒ(ə)n/, /ˈkweɪˌzaɪˌfɪʒ(ə)n/
Origin: Formed within English, by compounding. Etymons: quasi- comb. form, fission n.
Etymology: < quasi- comb. form + fission n. Compare French quasi-fission (1975 or earlier).
Nuclear Physics.
A type of interaction between heavy ions in which the reaction products have kinetic energies similar to those expected for fission of a compound nucleus but an angular distribution that is quite different.
ΘΚΠ
the world > matter > physics > atomic nucleus > nuclear fission > [noun] > similar process
quasifission1974
1974 F. Hanappe et al. in Physical Rev. Lett. 32 738/1 A new kind of reaction was observed, which seems to occur instead of complete fusion; therefore we called it ‘incomplete fusion’, but the name ‘quasifission’ is perhaps better.
1996 Physical Rev. C. 53 1734/1 Quasifission can be thought of as a bridge between deep-inelastic scattering..and compound nucleus fission reactions.
2003 Nature 3 Apr. 485/1 True fission occurs after the formation of an equilibrated compound nucleus; quasi-fission results from the much faster breakup of a partially fused composite.
This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).
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n.1974
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