Orientation effect in the neutron yield in deuterated Pd target bombarded by deuterium ion beam
| Parent link: | Physical Review Accelerators and Beams Vol. 22, iss. 3.— 2019.— [034201, 6 p.] |
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| Other Authors: | , , , , , |
| Summary: | Title screen At the ion accelerator HELIS at the LPI, the neutron yield is investigated from a deuteron-deuteron (DD) reaction in a deuterated Pd target, during an irradiation of its surface by a 20 keV deuterium (D) ion beam. The measurements of the neutron flux in the D beam direction are performed in dependence on the target angle ? with respect to the D beam axis using a multichannel detector based on He3 counters. A significant anisotropy in the neutron yield is observed, and it was higher by a factor of 2 at ?=0 compared to that at ?=±30°. The possible reasons for the anisotropy, including D ion channeling, are discussed. The orientation effect of increasing the relative probability of the DD reaction in Pd due to channeling was investigated by computer simulations using the bcm-2.0 code. The numerically obtained 20 keV D trajectories allow calculating the flux density of channeled D in dependence on the penetration depth and angle of incidence. The enhanced D flux density between crystal planes at a zero incident angle with respect to (200) Pd planes allows a qualitative explanation of the increase of the neutron yield in the DD reaction. |
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2019
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| Online Access: | https://doi.org/10.1103/PhysRevAccelBeams.22.034201 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662501 |