Simulation and analysis of preliminary data of the experiment to study proton-proton correlations in the d + ¹H → p + p + n reaction

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The procedure for extracting the energy value of a virtual singlet proton-proton state from experimental data is considered. From a comparison of experimental data with simulation results, a preliminary value of Epp in the d + ¹H → p + p + n reaction at a deuteron energy of 15.3 MeV was obtained.

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作者简介

A. Kasparov

Institute for Nuclear Research of the Russian Academy of Sciences

Email: vyacheslav.mitsuk@phystech.edu
俄罗斯联邦, Moscow, 117312

M. Mordovskoy

Institute for Nuclear Research of the Russian Academy of Sciences

Email: vyacheslav.mitsuk@phystech.edu
俄罗斯联邦, Moscow, 117312

V. Mitsuk

Institute for Nuclear Research of the Russian Academy of Sciences

编辑信件的主要联系方式.
Email: vyacheslav.mitsuk@phystech.edu
俄罗斯联邦, Moscow, 117312

V. Lebedev

Lomonosov Moscow State University

Email: vyacheslav.mitsuk@phystech.edu
俄罗斯联邦, Moscow, 119991

A. Spassky

Lomonosov Moscow State University

Email: vyacheslav.mitsuk@phystech.edu
俄罗斯联邦, Moscow, 119991

参考

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2. Fig. 1. Schematic diagram of the experimental setup designed based on the results of kinematic modeling: 1 – vacuum scattering chamber (Æ23 cm), 2 – CH2 target, 3 – neutron detector based on liquid scintillator EJ301, 4 – silicon ΔE-detector (25 μm), 5 – silicon E-detector (1000 μm), 6 – system including preamplifier and/or amplifier, 7 – shaper with tracking threshold, 8 – time-amplitude converter.

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3. Fig. 2. ΔE-E diagrams reflecting the experimental results before (a) and after preliminary processing of the experimental data (b). The regions correspond to charged particles formed in the reactions: 1 – protons in d + p → p + d; 2 – deuterons in d + 12C → d + 12C (g.s.); 3 – deuterons in d + p → d + p, 4 – protons in d + 12C → p + 13C.

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4. Fig. 3. Experimental spectra: reconstructed experimental spectrum of proton energy before (solid black line) and after (gray dotted line) selection by mass and emission angle of the second charged particle (a); similar reconstructed experimental spectrum of the energy of an undetected particle (b). Spectra after selection are plotted along the auxiliary Y axis.

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5. Fig. 4. Comparison of the obtained preliminary experimental spectrum of protons (dots) with the simulated spectra selected at Epp ± Γ = 100 ± 10 (dashed line), 400 ± 90 (solid line), 600 ± 120 keV (dotted line).

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