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<p>We have treated the collision between two hydrogen atoms in the ground states using atomic-orbital close-coupling calculations within the impact parameter method. The cross sections for projectile excitation to 2s and 2p, <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\hbox {H}^-\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mtext>H</mtext> <mo>-</mo> </msup> </math></EquationSource> </InlineEquation> formation in the projectile, and projectile ionization are calculated with a larger basis set than previous calculations in the energy range of 1 to 30 keV. The excitation results do not agree with experimental data. The <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\hbox {H}^-\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mtext>H</mtext> <mo>-</mo> </msup> </math></EquationSource> </InlineEquation> formation results agree well with experimental data, and the ionization results are also acceptable.</p>

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Calculation of Cross Sections for H-H Collision Using the Close-Coupling Method

  • 期刊论文

  • 发表日期：

    2025年12月29日

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  • Akinori Igarashi

摘要

We have treated the collision between two hydrogen atoms in the ground states using atomic-orbital close-coupling calculations within the impact parameter method. The cross sections for projectile excitation to 2s and 2p, \(\hbox {H}^-\) H - formation in the projectile, and projectile ionization are calculated with a larger basis set than previous calculations in the energy range of 1 to 30 keV. The excitation results do not agree with experimental data. The \(\hbox {H}^-\) H - formation results agree well with experimental data, and the ionization results are also acceptable.