EDN: BSVZNU
Authors & Affiliations
Egorov A.S.1, Piksaikin V.M.1, Mitrofanov V.F.1, Goverdovsky A.A.1, Gremyachkin D.E.1, Mitrofanov K.V.1, Vaishnene L.A.2, Vorobiev A.S.2, Shcherbakov O.A.2
1 A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia
2 Petersburg Nuclear Physics Institute named by B.P. Konstantinov
Egorov A.S.1 – Senior Researcher. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033 Tel.: +7 (484) 399-70-00 (add. 80-78); e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Piksaikin V.M.1 – Leading Researcher, Cand. Sci. (Phys.-Math.).
Mitrofanov V.F.1 – Chief Specialist.
Goverdovsky A.A.1 – Chief Researcher, Dr. Sci. (Phys.-Math.).
Gremyachkin D.E.1 – Head of Laboratory, Cand. Sci. (Phys.-Math.).
Mitrofanov K.V.1 – Head of Laboratory.
Vaishnene L.A.2 – Senior Researcher, Cand. Sci. (Phys.-Math.).
Vorobiev A.S.2 – Senior Researcher, Cand. Sci. (Phys.-Math.).
Shcherbakov O.A.2 – Senior Researcher, Cand. Sci. (Phys.-Math.).
Abstract
The goal of this work is to conduct experimental studies aimed at measuring the cross sections for generating light neutron-rich nuclei during the interaction of relativistic protons with nuclei in the mass number range A=18–208. An experimental setup was created using the relativistic proton beam of the PNPI synchrocyclotron (Gatchina). This setup includes a neutron detector, shielding, a system for collecting and processing experimental data, and a pneumatic transport system for moving samples from the irradiation position to the detector. The electronic data acquisition and processing system is built on a National Instruments platform, including data acquisition and processing programs developed by the project's authors. Two series of measurements were conducted using the setup: on macro-targets (an uncollimated proton beam) and on micro-targets (a collimated proton beam). As a result of two measurement sessions, neutron activity decay data were measured for the interaction of relativistic protons with the target nuclei of 18O, F, Na, Mg, Al, Si, S, Cl, Ti, Mn, Cr, Fe, Ni, Cu, Zn, Zr, Mo, Cd, Sn, W, and Pb. Processing of the measured data using the iterative least-squares method allowed us to obtain the mass dependence of the cross section for the production of 17N nuclei. Data for Zr and Mo were obtained for the first time. The obtained data are compared with similar data from other authors. Possible reasons for the discrepancies in the compared data are discussed.
Keywords
measuring the cross sections for generating, relativistic protons, PNPI synchrocyclotron, neutron detector, system for collecting and processing experimental data, pneumatic transport system, macro-targets, micro-targets, neutron activity decay, target nuclei, least-squares method, 17N production cross section
Article Text (PDF, in Russian)
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UDC 539.172.12
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2026, no. 2, 2:3
