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Abstract <p>The paper presents the results of measuring the distribution of ionization losses along the track of a recoil nucleus (<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\({}^{210}\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m3--> </InlineEquation>Pb) with an initial energy of 146.5 keV from the decay of <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\({}^{214}\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m4--> </InlineEquation>Po. The measurements were carried out using a multi-cell matrix (<InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(3\times 3\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m5--> </InlineEquation>) end-cap proportional counter (MCPC). Each cell is an end-face proportional counter <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(d=5\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m6--> </InlineEquation> mm with a ring anode <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(d=0.7\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m7--> </InlineEquation> mm. The MTPC was filled with a mixture of <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(96.3\%\textrm{Ar}+3.7\%\textrm{Xe}\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m8--> </InlineEquation> at a pressure of 62 Torr. Recoil nuclei were emitted from the source surface in the central part of the drift electrode. The sour electric field of daughter products of <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\({}^{222}\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m9--> </InlineEquation>Rn decay from an auxiliary xenon carrier gas. Calibration was carried out using the energy releases of <InlineEquation ID="IEq10"> <EquationSource Format="TEX">\(\alpha\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m10--> </InlineEquation>-particles from the same source at a distance between the drift electrode and the recording plane. It was determined that the amplitude of pulses from recoil nuclei at the peak of the spectrum corresponds to an energy of <InlineEquation ID="IEq11"> <EquationSource Format="TEX">\(63.1\pm 2.9\)</EquationSource> <!--NuclPhys2560197Gavrilyuk-m11--> </InlineEquation> keV.</p>

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Measurements of the Distribution of Ionization Losses Along the Track of a \({}^{{210}}\)Pb Recoil Nucleus Using a Matrix End-Cap Proportional Counter

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Yu. M. Gavrilyuk,
  • A. M. Gangapshev,
  • V. V. Kazalov,
  • V. V. Kuzminov,
  • R. A. Etezov

摘要

Abstract

The paper presents the results of measuring the distribution of ionization losses along the track of a recoil nucleus ( \({}^{210}\) Pb) with an initial energy of 146.5 keV from the decay of \({}^{214}\) Po. The measurements were carried out using a multi-cell matrix ( \(3\times 3\) ) end-cap proportional counter (MCPC). Each cell is an end-face proportional counter \(d=5\) mm with a ring anode \(d=0.7\) mm. The MTPC was filled with a mixture of \(96.3\%\textrm{Ar}+3.7\%\textrm{Xe}\) at a pressure of 62 Torr. Recoil nuclei were emitted from the source surface in the central part of the drift electrode. The sour electric field of daughter products of \({}^{222}\) Rn decay from an auxiliary xenon carrier gas. Calibration was carried out using the energy releases of \(\alpha\) -particles from the same source at a distance between the drift electrode and the recording plane. It was determined that the amplitude of pulses from recoil nuclei at the peak of the spectrum corresponds to an energy of \(63.1\pm 2.9\) keV.