Low-temperature Collisions between Neutral Molecules in Merged Molecular Beams

被引：27

作者：

Bertsche, Benjamin ^{[1
]}

Jankunas, Justin ^{[1
]}

Osterwalder, Andreas ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, SB ISIC, CH-1015 Lausanne, Switzerland

来源：

CHIMIA | 2014年 / 68卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

Cold chemistry; Merged molecular beams; Molecular scattering; Penning ionization; RESONANCES; IONIZATION;

D O I：

10.2533/chimia.2014.256

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have developed an experiment for the investigation of neutral molecular collisions in the gas phase at temperatures as low as 100 mK. These low temperatures are obtained by merging two supersonic expansions, using an electric and a magnetic guide, and by matching the velocities of the beams. Since the energy available for the collisions, or the temperature, is determined only by the relative velocity of the reaction partners this enables the study of chemical processes at very low temperatures without the need to prepare slow molecules in the laboratory frame of reference. This paper describes the method and presents results on the Ne(P-3(2))+NH3 Penning ionization.

引用

页码：256 / 259

页数：4

共 15 条

[1] Ionization of ammonia molecules by collision with metastable neon atoms [J].

Ben Arfa, M ;

Lescop, B ;

Cherid, M ;

Brunetti, B ;

Candori, P ;

Malfatti, D ;

Falcinelli, S ;

Vecchiocattivi, F .

CHEMICAL PHYSICS LETTERS, 1999, 308 (1-2) :71-77

[2] Kinetics and Dynamics of the S(1D2) + H2 → SH plus H Reaction at Very Low Temperatures and Collision Energies [J].

Berteloite, Coralie ;

Lara, Manuel ;

Bergeat, Astrid ;

Le Picard, Sebastien D. ;

Dayou, Fabrice ;

Hickson, Kevin M. ;

Canosa, Andre ;

Naulin, Christian ;

Launay, Jean-Michel ;

Sims, Ian R. ;

Costes, Michel .

PHYSICAL REVIEW LETTERS, 2010, 105 (20)

[3]

Bertsche B., UNPUB

[4] Observation of Partial Wave Resonances in Low-Energy O2-H2 Inelastic Collisions [J].

Chefdeville, Simon ;

Kalugina, Yulia ;

van de Meerakker, Sebastiaan Y. T. ;

Naulin, Christian ;

Lique, Francois ;

Costes, Michel .

SCIENCE, 2013, 341 (6150) :1094-1096

[5] Appearance of Low Energy Resonances in CO-Para-H2 Inelastic Collisions [J].

Chefdeville, Simon ;

Stoecklin, Thierry ;

Bergeat, Astrid ;

Hickson, Kevin M. ;

Naulin, Christian ;

Costes, Michel .

PHYSICAL REVIEW LETTERS, 2012, 109 (02)

[6] Scattering resonances in the simplest chemical reaction [J].

Fernández-Alonso, F ;

Zare, RN .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 2002, 53 :67-99

[7] Observation of Resonances in Penning Ionization Reactions at Sub-Kelvin Temperatures in Merged Beams [J].

Henson, A. B. ;

Gersten, S. ;

Shagam, Y. ;

Narevicius, J. ;

Narevicius, E. .

SCIENCE, 2012, 338 (6104) :234-238

[8] Astronomical Chemistry [J].

Klemperer, William .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 62, 2011, 62 :173-184

[9]

Lavert-Ofir E, 2014, NAT CHEM, V6, P332, DOI [10.1038/NCHEM.1857, 10.1038/nchem.1857]

[10]

Niehaus A., 1981, Advan. Chem. Phys, V45, P399

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