Large gamma anisotropy observed in the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Cf</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>252</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> spontaneous-fission process

H. van der Ploeg; R. Postma; J. C. Bacelar; T. van den Berg; V. Iacob; J. Jongman; A. van der Woude

doi:10.1103/PhysRevLett.68.3145

Large gamma anisotropy observed in the ${}^{252}{Cf}$ spontaneous-fission process

H. van der Ploeg, R. Postma, J. C. Bacelar, T. van den Berg, V. Iacob, J. Jongman, and A. van der Woude

Phys. Rev. Lett. 68, 3145 – Published 25 May 1992; Erratum Phys. Rev. Lett. 69, 1148 (1992)

Abstract

The energy spectrum and the angular dependence relative to the fission direction of photons in the energy region between 2 and 40 MeV have been measured for the spontaneous fission of ${}^{252}{Cf}$ . A large anisotropy was found in the energy region 8 to 12 MeV implying that photons in this region are emitted from a nuclear system which is highly elongated along the fission axis.