Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Ag</mml:mi> <mml:mo>(</mml:mo> <mml:mi mathvariant="normal">n</mml:mi> <mml:mo>,</mml:mo> <mml:mo> </mml:mo> <mml:mi>γ</mml:mi> <mml:mo>)</mml:mo> </mml:math> cross
The <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"> <a:mo>(</a:mo> <a:mi mathvariant="normal">n</a:mi> <a:mo>,</a:mo> <a:mo> </a:mo> <a:mi>γ</a:mi> <a:mo>)</a:mo> </a:math> cross section of silver is crucial for the nucleosynthesis process of nuclear astrophysics, the design of silver-indium-cadmium absorber rod in the nuclear reactors, and neutron resonance capture analysis for determining the elemental and isotopic composition of cultural heritage. The high-precision <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"> <c:mi>Ag</c:mi> <c:mo>(</c:mo> <c:mi mathvariant="normal">n</c:mi> <c:mo>,</c:mo> <c:mo> </c:mo> <c:mi>γ</c:mi> <c:mo>)</c:mo> </c:math> cross section was measured from 1 eV to 1 MeV at the Back-n facility of the Chinese Spallation Neutron Source using the time-of-flight method and pulse height weighting technique. The resonance parameters were accurately extracted in the resolved resonance region by the multilevel multichannel <e:math xmlns:e="http://www.w3.org/1998/Math/MathML"> <e:mi>R</e:mi> </e:math> -matrix code . The code was used to describe the average cross sections in the unresolved resonance region, and the Maxwellian-averaged cross sections (MACSs) of <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"> <f:mrow> <f:mmultiscripts> <f:mi mathvariant="normal">Ag</f:mi> <f:mprescripts/> <f:none/> <f:mn>107</f:mn> </f:mmultiscripts> </f:mrow> </f:math> and <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"> <h:mrow> <h:mmultiscripts> <h:mi mathvariant="normal">Ag</h:mi> <h:mprescripts/> <h:none/> <h:mn>109</h:mn> </h:mmultiscripts> </h:mrow> </h:math> were further given in the 5–100 keV range. The MACS values at <j:math xmlns:j="http://www.w3.org/1998/Math/MathML"> <j:mrow> <j:mi>k</j:mi> <j:mi>T</j:mi> <j:mo>=</j:mo> <j:mn>30</j:mn> <j:mo> </j:mo> <j:mi>keV</j:mi> </j:mrow> </j:math> for <k:math xmlns:k="http://www.w3.org/1998/Math/MathML"> <k:mrow> <k:mmultiscripts> <k:mi mathvariant="normal">Ag</k:mi> <k:mprescripts/> <k:none/> <k:mn>107</k:mn> </k:mmultiscripts> </k:mrow> </k:math> <m:math xmlns:m="http://www.w3.org/1998/Math/MathML"> <m:mo>(</m:mo> <m:mn>887</m:mn> <m:mo> </m:mo> <m:mo>±</m:mo> <m:mo> </m:mo> <m:mn>89</m:mn> <m:mo> </m:mo> <m:mi>mb</m:mi> <m:mo>)</m:mo> </m:math> and <n:math xmlns:n="http://www.w3.org/1998/Math/MathML"> <n:mrow> <n:mmultiscripts> <n:mi mathvariant="normal">Ag</n:mi> <n:mprescripts/> <n:none/> <n:mn>109</n:mn> </n:mmultiscripts> </n:mrow> </n:math> <p:math xmlns:p="http://www.w3.org/1998/Math/MathML"> <p:mo>(</p:mo> <p:mn>903</p:mn> <p:mo> </p:mo> <p:mo>±</p:mo> <p:mo> </p:mo> <p:mn>90</p:mn> <p:mo> </p:mo> <p:mi>mb</p:mi> <p:mo>)</p:mo> </p:math> are slightly higher than the recommended values in the Karlsruhe Astrophysical Database of Stellar Nucleosynthesis.
Authors
- Karl J. Friston
Institutions
- University of Science and Technology of China (CN)
- Sun Yat-sen University (CN)
- Fudan University (CN)
- Guangxi Normal University (CN)
- Chengdu University of Technology (CN)
- Shenyang Normal University (CN)
- Henan Academy of Sciences (CN)
- China Institute of Atomic Energy (CN)
- China Spallation Neutron Source (CN)
- Shanghai Advanced Research Institute (CN)
- Shanghai Institute of Applied Physics (CN)
- Institute of Modern Physics (CN)
- Spallation Neutron Source
- Henan Normal University (CN)
- University of South China (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Physical Review Research
- Published
- 2025-11-13
- DOI
- https://doi.org/10.1103/1c5x-8d44
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00