Speaker
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Studies of the cross-sections and yields of photonuclear reactions with production of 12B(T1/2 = 20.2 ms) and 12N(T1/2 = 11.0 ms) are interesting both for development of ideas about 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 registration of 12B- and 12N- activities.
In [2, 3] there were considered features of emission of g- quanta, electrons and positrons from targets at decays of produced in them 12B- and 12N- nuclei.
In [4] for the reactions 13C(g, p), 14N(g, 2p), 14N(g, 2n), there was given analysis of known experimental and model-calculated data (including our own calculated by 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 at least one order of magnitude. In [5] there were considered two variants of such experiments with measuring activities of 12B and 12N with registration of emitted b- particles or g- quanta.
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 g- quanta by two NaI-spectrometers (length 100 mm, diameter 150 mm) with usage of the controlled dividers of power supply for the photomultiplier tubes of both scintillation spectrometers [6].
1. L.Z. Dzhilavyan. Phys. Part. Nucl. No 5, 556 (2019).
2. S.S. Belyshev, L.Z. Dzhilavyan, et al., Bull. Russ. Acad. Sci.: Phys. 80, 566 (2016).
3. S.S. Belyshev, et al., Bull. Russ. Acad. Sci.: Phys. 83, 449 (2019).
4. O.I. Achakovskiy, et al., Bull. Russ. Acad. Sci.: Phys. 80, 572 (2016).
5. L.Z. Dzhilavyan. About yield measuring for the reactions 14N(g, 2n)12N and 14N(g, 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. L.Z. Dzhilavyan, et al., Bull. Russ. Acad. Sci. Phys. 83, 474 (2019).
