| 000 | 03739nlm1a2200493 4500 | ||
|---|---|---|---|
| 001 | 662678 | ||
| 005 | 20231030041829.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\33833 | ||
| 035 | _aRU\TPU\network\28899 | ||
| 090 | _a662678 | ||
| 100 | _a20200923a2020 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aNL | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aNedis-Serpent simulation of a neutron source assembly with complex internal heterogeneous structure _fS. V. Bedenko, G. N. Vlaskin, N. Ghal-Eh [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 330 | _aThe hybrid use of Nedis-2m and Serpent 2.1.30 codes to predict the radiation characteristics (i.e., neutron yield and energy spectrum) of an Am-Be source with a fine-grained mixture of americium dioxide (AmO2) and beryllium (Be) core was studied with a focus on the grain size influence on the simulation results. The study showed that the fine-grained structure of the source core would decrease the number of alpha particles participating in the nuclear reactions with 17,18O and 9Be nuclei, which softened the neutron energy spectrum and reduced the neutron yield. The simulations also confirmed that the source core made of the stable crystals of AmBe13 intermetallic alloy would improve the neutron yield to maximum 50% compared to the core made of AmO2. Moreover, a source with a variable neutron yield was proposed with a heterogeneous core of AmO2 rods embedded in Be. The neutron energy spectrum of heterogeneous source resembled the energy spectrum of Deuterium-Tritium (D-T) neutrons which were generated in a long magnetic trap with high-temperature plasma. The subcritical irradiation facility assembled from the nth number of heterogeneous Am-Be source can be used to study the properties of materials and the equipment operating in the epithermal and fast neutron spectra. The use of a heterogeneous Am-Be assembly, as a basic element of an irradiation installation, simplifies the handling and operation procedures because it is easily disabled by removing the Be layer, or by inserting a sheet of the appropriate size and material between the Be and Am rod. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tApplied Radiation and Isotopes | ||
| 463 |
_tVol. 160 _v[109066, 8 p.] _d2020 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aradioisotopic neutron sources | |
| 610 | 1 | _a(α,n)-reaction | |
| 610 | 1 | _aheterogeneous structure | |
| 610 | 1 | _anedis-2m | |
| 610 | 1 | _aserpent 2.1.30 | |
| 610 | 1 | _aрадиоизотопные источники | |
| 610 | 1 | _aреакции | |
| 610 | 1 | _aнеоднородная структура | |
| 701 | 1 |
_aBedenko _bS. V. _cphysicist _cAssociate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences _f1980- _gSergey Vladimirovich _2stltpush _3(RuTPU)RU\TPU\pers\30831 |
|
| 701 | 1 |
_aVlaskin _bG. N. _gGennadiy Nikolaevich |
|
| 701 | 1 |
_aGhal-Eh _bN. _gNima |
|
| 701 | 1 |
_aLutsik _bI. O. _gIgor Olegovich |
|
| 701 | 1 |
_aIrkimbekov _bR. A. _gRuslan Aleksandrovich |
|
| 701 | 1 |
_aRahmani _bF. _gFaezeh |
|
| 701 | 1 |
_aVega-Carrillo _bH. R. _gHector Rene |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИнженерная школа ядерных технологий _bОтделение ядерно-топливного цикла _h7864 _2stltpush _3(RuTPU)RU\TPU\col\23554 |
| 801 | 2 |
_aRU _b63413507 _c20200923 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1016/j.apradiso.2020.109066 | |
| 942 | _cCF | ||