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13 pages, 2631 KiB

Open AccessArticle

Scattering and One Neutron Pick-Up Reaction on a ¹⁰B Target with Deuterons at an Energy of 14.5 MeV

by Nurzhan Saduyev, Maulen Nassurlla, Nassurlla Burtebayev, Stanislav Sakuta, Marzhan Nassurlla, Orazaly Kalikulov, Romazan Khojayev, Avganbek Sabidolda and Damir Issayev

Physics 2024, 6(3), 1098-1110; https://doi.org/10.3390/physics6030068 - 2 Sep 2024

Cited by 3 | Viewed by 1643

Abstract

The elastic and inelastic scattering of deuterons on ¹⁰B nuclei and the ¹⁰B(d, t)⁹B reaction were studied at a deuteron energy of 14.5 MeV. In inelastic scattering, differential cross-sections for transitions to ¹⁰B states at excitation energies, E_x, of 0.718 MeV (1⁺), 2.154 MeV (1⁺), and 3.59 MeV (2⁺) were measured. The cross-sections of the (d, t) reaction were measured for the ground (3/2⁻) and excited states of the ⁹B nucleus at E_x = 2.361 MeV (5/2⁻) and 2.79 MeV (5/2⁺). An analysis of the corresponding angular distributions was carried out using the coupled channel method. As a result of the calculations, the values of the quadrupole deformation parameters (β₂ ≈ 0.7 ± 0.1) for various transitions in the ¹⁰B nucleus in inelastic scattering were extracted. From the analysis of the (d, t) reaction, the values of spectroscopic amplitudes (SA = 0.67 and SA = 0.94) for transitions to the states of the ⁹B nucleus were extracted. The results obtained here, taking into account possible measurement errors, are in good agreement with the previously obtained data and the theoretical predictions. Full article

(This article belongs to the Section Atomic Physics)

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7 pages, 398 KiB

Open AccessCommunication

Measurement of the Tensor-Analyzing Power Component T₂₀ for Incoherent Negative Pion Photoproduction on a Deuteron

by Anna Kuzmenko, Vyacheslav Gauzshtein, Eed Darwish, Alexander Fix, Matvey Kuzin, Michael Levchuk, Alexey Loginov, Dmitriy Nikolenko, Igor Rachek, Yuriy Shestakov, Dmitriy Toporkov, Arseniy Yurchenko, Bogdan Vasilishin and Sergey Zevakov

Atoms 2023, 11(6), 99; https://doi.org/10.3390/atoms11060099 - 15 Jun 2023

Cited by 1 | Viewed by 1343

Abstract

New results for the

$T_{20}$ -component of the tensor-analyzing power of the incoherent negative pion photoproduction are presented. The experiment was performed for the electron beam energy of 800 MeV at the VEPP-3 storage ring in 2021. To extract the

$T_{20}$ [...] Read more.

New results for the

$T_{20}$ -component, we used asymmetry with respect to the change in the sign of the tensor polarization of the deuteron target. Identification of the reaction events was carried out by the detection of two protons in coincidence. Experimental data were compared with the results of statistical simulation, considering the interaction between the

$N N$ and

$π N$ subsystems in the final state of the reaction. Full article

(This article belongs to the Section Nuclear Theory and Experiments)

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16 pages, 10133 KiB

Open AccessArticle

Development of a Radio-Frequency Quadrupole Accelerator for the HL-2A/2M Tokamak Diagnostic System

by Shuo Liu, Yaxia Wei, Yuanrong Lu, Zhi Wang, Meiyun Han, Tianhao Wei, Yin Xia, Haipeng Li, Shuli Gao and Pengfei Zheng

Appl. Sci. 2022, 12(8), 4031; https://doi.org/10.3390/app12084031 - 15 Apr 2022

Cited by 5 | Viewed by 2275

Abstract

In order to figure out the migration and deposition of impurities on the first wall of HL-2A/2M tokamak, Peking University and Southwestern Institute of Physics are co-developing a deuteron RFQ as part of the in situ ion-beam diagnostic for the material. The RFQ, which operates at 162.5 MHz, is designed to accelerate a 10-mA deuteron beam from 40 keV up to 1.5 MeV. Key design considerations and the final design parameters are presented. The RFQ has been conditioned at a 1% duty factor for 80 h at RF cavity power of 55 kW. The specific shunt impedance of the cavity is 221 kΩ·m by measuring the bremsstrahlung spectrum. The intrinsic Q-value after the high-power tests measured by the Ring-Down method is 13,780. Beam commissioning has been taken place during the first half of 2021, and the beam measurements include beam current and energy of ²H⁺ ion. A 10 mA ²H⁺ beam was successfully accelerated through the RFQ. Full article

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