Speaker
Description
Studies of yields for photonuclear reactions with production of 12B((T½) = 20.2 ms) and 12N((T½) = 11.0 ms) are interesting both for development of models of nuclear reactions with nuclei-products near the boundaries of stability to nucleon-emission, and for detection of hidden explosives and drugs (see, e.g., [1]) with (12B and 12N)- activity registration.
In [2, 3], there were considered features of emission of gamma- quanta, electrons and positrons from targets at decays of produced in them (12B and 12N)- nuclei.
In [4] for the reactions 13C(gamma, p), 14N(gamma, 2p), 14N(gamma, 2n), there was given analysis of known experimental and model-calculated data (including our own ones calculated by means of the widely used models of nuclear reactions). It was shown that new yield measurements are necessary for these reactions because estimated discrepancies of data are on the level of 1–2 orders of magnitude. In [5], there were briefly considered variants of such measurements with detecting (12B and 12N)- activities by scintillation gamma- spectrometers or telescopes of thin DeltaE- counters. The first variant with NaI- spectrometers was considered in [6].
In the present work we considered measuring of (12B and 12N)- activities at the pulsed electron accelerator based on registration of emitted from the target electrons or positrons by rather thin telescopic plastic counters with usage of the controlled PMT power supply dividers for all these scintillation counters [7].
1. L.Z. Dzhilavyan. Phys. Part. Nucl. No 5, 556 (2019).
2. S.S. Belyshev et al., Bull. Russ. Acad. Sci.: Phys. 80, P. 566 (2016).
3. S.S. Belyshev et al., Bull. Russ. Acad. Sci.: Phys. 83, P. 449 (2019).
4. O.I. Achakovskiy et al., Bull. Russ. Acad. Sci.: Phys. 80, P. 572 (2016).
5. L.Z. Dzhilavyan. About yield measuring for the reactions 14N(gamma, 2n)12N and 14N(gamma, 2p)12B. Poster Reports of the XIV International Seminar on Electromagnetic Interactions of Nuclei (EMIN – 2015, October 5-8, Moscow, Russia). INR RAS, Moscow, 2016, pp. 12–15.
6. S.S. Belyshev et al., Bull. Russ. Acad. Sci.: Phys. 86, No. 4. P. 577 (2022) (in Russian)
7. L.Z. Dzhilavyan et al., Bull. Russ. Acad. Sci.: Phys. 83, P. 474 (2019).
| Section | 2. Experimental and theoretical studies of nuclear reactions |
|---|---|
| The speaker is a student or young scientist | No |
