Measurements of the ¹⁰⁷ Ag neutron capture cross sections with pulse height weighting technique at the CSNS Back-n facility

Abstract

Silver indium cadmium (Ag-In-Cd) control rod is widely used in pressurized water reactor nuclear power plants, and which is continuously consumed in a high neutron flux environment. The mass ratio of 107Ag in Ag-In-Cd control rod is 41.44%. To accurately calculate the consumption value of the control rod, a reliable neutron reaction cross section of the 107Ag is required. Meanwhile, 107Ag is also an important weak r nuclei. Thus, the cross sections for neutron induced interactions with 107Ag are very important both in nuclear energy and nuclear astrophysics. The (n, γ) cross section of 107Ag has been measured in the energy range of 1-60 eV using a back streaming white neutron beam line at China spallation neutron source. The resonance parameters are extracted by an R-matrix code. All the cross section of 107Ag and resonance parameters are given in this paper as datasets. The datasets are openly available at https://www.scidb.cn/s/aaUJbu.

Analysis of displacement damage effects on the charge-coupled device induced by neutrons at Back-n in the China Spallation Neutron Source

“…However, when it is irradiated again at nearly 1700 s a little displacement damage appears. As for pixel2 [27,4] and pixel4 [131,3], a little displacement damage appears after an accumulated neutron fluence of about 5×10 9 neutrons•cm −2 even though they are irradiated again at nearly 1700 s. As for pixel1 [26,1], a little displacement damage appears after the accu-mulated neutron fluence reaches about 5×10 9 neutrons•cm −2 . However, when it is irradiated again at nearly 1700 s the pixel is twice damaged by the neutrons and reaches the saturation state.…”

“…It can be used for nuclear data measurement, neutron resonance radiography and analysis of radiation damage. [4][5][6][7] Charge-coupled devices (CCDs) are widely used in many space environments, such as star tracking, space remote sensing and space object detection. However, when used in these applications they can be seriously damaged by particles or rays, leading to degradation of image quality or even functional failure.…”

Effects of Dyglomera® on leptin expression, pro-inflammatory cytokines, and adipocyte browning in 3T3-L1 cells

“…Recent studies have shown that brown adipocytes or beige adipose cells are present in WAT [11]. Stimulating fat browning involves expression of phenotypic proteins that contribute to the formation of brown adipocytes, including T-box protein 1 (Tbx-1), trans-membrane protein 26 (Tmem26), PR domain 16 (Prdm16), and cluster of differentiation 40 (Cd40) [12][13][14][15]. Brown and beige-like adipocytes have high mitochondrial content.…”