| 000 | 03738nlm1a2200445 4500 | ||
|---|---|---|---|
| 001 | 655142 | ||
| 005 | 20231030041331.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\20960 | ||
| 035 | _aRU\TPU\network\20156 | ||
| 090 | _a655142 | ||
| 100 | _a20170705a2017 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aRU | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aAstrophysical S-factor of T(4He, γ)7Li reaction at Ecm = 15.7 keV _fV. M. Bystritsky [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: p. 570 (32 tit.)] | ||
| 330 | _aThe astrophysical S-factor of the reaction T(4He, γ)7Li is measured for the first time at the center of mass energy Ecm = 15.7 keV, lower than the energy range of the Standard Big Bang Nucleosynthesis (SBBN) model. The experiment is performed on a Hall pulsed accelerator (TPU, Tomsk). An acceleration pulse length of 10 μs allows one to suppress the background of cosmic radiation and the ambient medium by five orders of magnitude. A beam intensity of ~ 5 × 10144He+ ions per pulse allows one to measure an extremely low reaction yield. The yield of γ-quanta with the energies Eγ0= 2483.7 keV and Eγ1= 2006.1 keV is registered by NaI(Tl) detectors with the efficiency ε = 0.331 ± 0.026. A method for direct measurement of the background from the chain of reactions T(4He, 4He)T→T(T, 2n)X→(n, γ) and/or (n, n′γ) which ends by neutron activation of materials surrounding the target is proposed and implemented in this study. The value of the astrophysical S-factor of the reaction T(4He, γ)7Li Sαt(Ecm = 15.7 keV) = 0.091 ± 0.032 keV b provides the choice from the set of experimental data for the astrophysical Sαt-factor in favor of experimental data [4] with Sαt(Ecm = 0) = 0.1067 ± 0.0064 keV b. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 |
_tPhysics of Particles and Nuclei Letters _oScientific Journal |
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| 463 |
_tVol. 14, iss. 4 _v[P. 560–570] _d2017 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aBystritsky _bV. M. _gVyacheslav Mikhaylovich |
|
| 701 | 1 |
_aDudkin _bG. N. _cspecialist in the field of nuclear physics _cSenior researcher of Tomsk Polytechnic University, Candidate of physical and mathematical sciences _f1944- _gGennadiy Nikolaevich _2stltpush _3(RuTPU)RU\TPU\pers\34190 |
|
| 701 | 1 |
_aEmets _bE. G. _cphysicist, specialist in the field of nuclear physics _cEngineer-designer of Tomsk Polytechnic University _f1984- _gEvgeny Gennadievich _2stltpush _3(RuTPU)RU\TPU\pers\33721 |
|
| 701 | 1 |
_aFilipovich _bM. _gMarius |
|
| 701 | 1 |
_aKrylov _bA. R. _gAleksandr Romanovich |
|
| 701 | 1 |
_aNechaev _bB. A. _cphysicist _cleading engineer of Tomsk Polytechnic University _f1945- _gBoris Aleksandrovich _2stltpush _3(RuTPU)RU\TPU\pers\34601 |
|
| 701 | 1 |
_aNurkin _bА. _cphysicist _cengineer of Tomsk Polytechnic University _f1991- _gAzamat _2stltpush _3(RuTPU)RU\TPU\pers\39763 |
|
| 701 | 1 |
_aPadalko _bV. N. _cphysicist _cLeading engineer of Tomsk Polytechnic University _f1949- _gVladimir Nikolaevich _2stltpush _3(RuTPU)RU\TPU\pers\32978 |
|
| 701 | 1 |
_aFilippov _bA. V. _gAleksandr Viktorovich |
|
| 701 | 1 |
_aSadovsky _bA. B. _gAndrey Borisovich |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bФизико-технический институт (ФТИ) _bЛаборатория № 33 ядерного реактора _h6474 _2stltpush _3(RuTPU)RU\TPU\col\19896 |
| 801 | 2 |
_aRU _b63413507 _c20171102 _gRCR |
|
| 856 | 4 | _uhttp://dx.doi.org/10.1134/S1547477117040057 | |
| 942 | _cCF | ||