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Differential and angle-integrated cross sections for the $^{10}$B($n,{\alpha}$)$^{7}$Li, $^{10}$B($n, {\alpha}$$_{0}$)$^{7}$Li and $^{10}$B($n,{\alpha}$$_{1}$)$^{7}$Li$^{*}$ reactions have been measured at CSNS Back-nwhite neutron source. Two enriched (90%) $^{10}$B samples 5.0 cm in diameterand ~85.0 ${\mu}$g/cm$^{2}$ in thickness each with an aluminum backing wereprepared, and back-to-back mounted at the sample holder. The charged particleswere detected using the silicon-detector array of the Light-charged ParticleDetector Array (LPDA) system. The neutron energy E$_{n}$ was determined by TOF(time-of-flight) method, and the valid ${\alpha}$ events were extracted fromthe E$_{n}$-Amplitude two-dimensional spectrum. With 15 silicon detectors, thedifferential cross sections of ${\alpha}$-particles were measured from19.2{\deg} to 160.8{\deg}. Fitted with the Legendre polynomial series, the ($n,{\alpha}$) cross sections were obtained through integration. The absolute crosssections were normalized using the standard cross sections of the $^{10}$B($n,{\alpha}$)$^{7}$Li reaction in the 0.3 - 0.5 MeV neutron energy region. Themeasurement neutron energy range for the $^{10}$B($n, {\alpha}$)$^{7}$Lireaction is 1.0 eV $\le$ En < 2.5 MeV (67 energy points), and for the$^{10}$B($n, {\alpha}$$_{0}$)$^{7}$Li and $^{10}$B($n,{\alpha}$$_{1}$)$^{7}$Li$^{*}$ reactions is 1.0 eV $\le$ En < 1.0 MeV (59energy points). The present results have been analyzed by the resonancereaction mechanism and the level structure of the $^{11}$B compound system, andcompared with existing measurements and evaluations.

chinese physics c, high energy physics and nuclear physics/chinese physics c

Measurements of differential and angle-integrated cross sections for the  $^{10}$B($n, {\alpha}$)$^{7}$Li reaction in the neutron energy range from 1.0  eV to 2.5 MeV