88 research outputs found

    Steric effects and quantum interference in the inelastic scattering of NO(X) + Ar

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    Rotationally inelastic collisions of NO(X) with Ar are investigated in unprecedented detail using state-to-state, crossed molecular beam experiments. The NO(X) molecules are selected in the Ω = 0.5, j = 0.5, f state and then oriented such that either the 'N' or 'O' end of the molecule is directed towards the incoming Ar atom. Velocity map ion imaging is then used to probe the scattered NO molecules in well-defined quantum states. We show that the fully quantum state-resolved differential steric asymmetry, which quantifies how the relative efficiency for scattering off the 'O' and the 'N' ends of the molecule varies with scattering angle, is strongly affected by quantum interference. Significant changes in both integral and differential cross sections are found depending on whether collisions occur with the N or O ends of the molecule. The results are well accounted for by rigorous quantum mechanical calculations, in contrast to both classical trajectory calculations and more simplistic models that provide, at best, an incomplete picture of the dynamics

    臨床化学実習の充実と教育効果について : 臨床実習指導者との連携の重要性

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    臨床化学教育をより充実させるには何をすべきか教育改善を試みながら,実習指導者と連携を取り学生の能力を引き出す教育を目指して,教育効果を高める方法を検討した.今回,医科大学附属病院中央検査部の臨床実習(2年次後半)における臨床化学教育効果についてアンケート調査を実施し,臨床実習の成果を評価したので報告する.臨床実習評価は,4つのカテゴリーに分け26項目について,5段階の自己評価を行った.臨床実習に対する学生の全体的評価は,実習指導者の評価や自己評価においてどの項目も平均4.5以上で非常に高く有意義な実習であることがわかった.さらに,13年間の国家試験における臨床化学正解率は平均73.4%,国家試験合格率は約94%(全国平均:75%)であり高い合格率を維持していた.本研究により3年間の臨床化学実習の内容を検証し,さらに臨床実習アンケート調査を実施することにより,臨床化学実習の充実と教育効果を高めるためには,臨床実習指導者との連携が大変重要であると思われた

    Scattering of Stark-decelerated OH radicals with rare-gas atoms

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    We present a combined experimental and theoretical study on the rotationally inelastic scattering of OH (X\,^2\Pi_{3/2}, J=3/2, f) radicals with the collision partners He, Ne, Ar, Kr, Xe, and D2_2 as a function of the collision energy between 70\sim 70 cm1^{-1} and 400~cm1^{-1}. The OH radicals are state selected and velocity tuned prior to the collision using a Stark decelerator, and field-free parity-resolved state-to-state inelastic relative scattering cross sections are measured in a crossed molecular beam configuration. For all OH-rare gas atom systems excellent agreement is obtained with the cross sections predicted by close-coupling scattering calculations based on accurate \emph{ab initio} potential energy surfaces. This series of experiments complements recent studies on the scattering of OH radicals with Xe [Gilijamse \emph{et al.}, Science {\bf 313}, 1617 (2006)], Ar [Scharfenberg \emph{et al.}, Phys. Chem. Chem. Phys. {\bf 12}, 10660 (2010)], He, and D2_2 [Kirste \emph{et al.}, Phys. Rev. A {\bf 82}, 042717 (2010)]. A comparison of the relative scattering cross sections for this set of collision partners reveals interesting trends in the scattering behavior.Comment: 10 pages, 5 figure

    Carbon-chain Free Radicals Studied by Laser and Microwave Spectroscopy

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    報告番号: 甲11625 ; 学位授与年月日: 1996-03-29 ; 学位の種別: 課程博士 ; 学位の種類: 博士(理学) ; 学位記番号: 博総合第88号 ; 研究科・専攻: 総合文化研究科広域科学専

    Spin-orbit Conserving and Changing Transitions in Inelastic Scattering of NO(2?)+Ar

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    Kinetics and Dynamics on the Formation of S_2(X^3Σ^-_g, a^1Δ_g) in the S(^1D) + OCS Reaction

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    Selective detection of single vibrational level of the X and a states of S2. Detection of highly vibrationally excited S2(X, a) generated in the S(1D) + OCS reaction. About half of the available energy is deposited into the vibrational motion of S2(X, a). Determination of the overall rate coefficient for the S(1D) + OCS reaction.学会名:22nd International Symposium on Gas Kinetics ; 会期:2012年6月18日(月)~22日(金) ; 開催地:アメリカ,コロラド州,ボールダー(Boulder) ; 発表者:Katsuyoshi Yamasaki ; 発表形式:ポスタ
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