Delayed-Neutron Spectra Following Decay of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">As</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>85</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Sb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>135</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

H. Franz; J. -V. Kratz; K. -L. Kratz; W. Rudolph; G. Herrmann; F. M. Nuh; S. G. Prussin; A. A. Shihab-Eldin

doi:10.1103/PhysRevLett.33.859

Delayed-Neutron Spectra Following Decay of ${}^{85}{As}$ and ${}^{135}{Sb}$

H. Franz, J. -V. Kratz, K. -L. Kratz, W. Rudolph, G. Herrmann, F. M. Nuh, S. G. Prussin, and A. A. Shihab-Eldin

Phys. Rev. Lett. 33, 859 – Published 30 September 1974

Abstract

The delayed-neutron spectra following decay of 2.05-sec ${}^{85}{As}$ and 1.7-sec ${}^{135}{Sb}$ are found to consist of a small number of discrete lines and the fluctuations in the experimental spectra differ significantly from those calculated with a statistical model. The data indicate that the $β$ -strength function for these decays contains narrow resonances in the energy range 5-8 MeV.