TY - JOUR AU - Anh, Tran Tuan AU - Son, Pham Ngoc AU - Tan, Vuong Huu PY - 2016/04/04 Y2 - 2024/03/28 TI - Determination of \(\gamma\)-rays Relative Intensities from the \(^{35}\)Cl\((n, \gamma )^{36}\text{Cl}\) Reaction on Filtered Thermal Neutron Beam JF - Communications in Physics JA - Comm. Phys. VL - 25 IS - 4 SE - Papers DO - 10.15625/0868-3166/25/4/7302 UR - https://vjs.ac.vn/index.php/cip/article/view/7302 SP - 367 AB - <em>The relative intensities of prompt g-rays from the <sup>35</sup>Cl(n, g)<sup>36</sup>Cl reation with thermal neutron have been used as secondary g-ray intensity standards for the prompt gamma neutron activation analysis (PGNAA) and for nuclear data measurements due to a high capture cross section. The filter neutron technique was applied for producing a thermal neutron beam at the neutron channel N<sub>o</sub>. 4 of the Dalat nuclear research reactor. The neutron flux and Cd-ratio are 8.72 ยด 10<sup>6</sup> n.cm<sup>-2</sup>.s<sup>-1</sup>and 134, respectively, determined by the gold foil activation method. A new PGNAA system with a HPGe detector of 58% relative efficiency and a digital spectrometer was used to detect prompt gamma rays from the <sup>35</sup>Cl(n, g)<sup>36</sup>Cl reaction. In this work, relative intensities of 23 prompt g-rays have been determined on the filtered thermal neutron beam. The present results within accuracy 3.0% or better are in good agreement with literature values and data from previous measurements.</em> ER -