Total Neutron Cross Section of OrientedHo165from 2 to 135 MeV

Influence of the Static Deformation ofLi7on theLiMöbius1, Böttger2, Egelhof3 et al. 1981Phys. Rev. Lett.22090View full textAdd to dashboardCite

“…Ao r and T 20 r approach a constant value for higher energies E» V{R 0 ) since the angle cp tends to a limiting value of 90° [Eqs. (4), (6), and (7)]. As can be seen from the plot of Aa r , this limit has not been reached in the energy region investigated.…”

“…(6) and (8)] in the sharp-cutoff model. It is therefore determined by the reaction barrier V{R 0 ) only: E 0 = (1 + /3)V{R Q )/ 2 [Eqs.…”

Nuclear Orientation Thermometry

“…The nuclear deformation effect is defined by Addr= 0-, (oriented)-ar-(unoriented) (25) where a-, (oriented) is the total neutron cross section when the nuclei are oriented, and o-, (unoriented) is the unoriented total neutron cross section. This effect, which depends upon the mass shape of the nucleus, was first measured by Marshak and coworkers [22] using a polarized . 65 Ho target.…”

“…65 Ho are almost pure quadrupole-shaped nuclei, the effect is mainly dependent on B 2 (,T); see figure 8 of [22]. In addition, A,,f also depends upon the neutron energy, nuclei; see figure 6 of [22]. In the case of 59 Co, A.e is a maximum at a neutron energy of -2 MeV [104,105].…”

“…This has been done by Berglund and coworkers 11] and applied to polycrystalhne Fe, Ni and Co. It has also been done by Shelley [21] and Marshak and coworkers [22] for polycrystalline holmium. Since incomplete magnetic saturation is often sample-dependent (i.e., the method used, purity, strains etc.…”