Magnetic deflection of neutral sodium-doped ammonia clusters

被引：8

作者：

Barnes, J. V. ^{[1
]}

Beck, M. ^{[1
]}

Hartweg, S. ^{[1
]}

Luski, A. ^{[2
]}

Yoder, B. L. ^{[1
]}

Narevicius, J. ^{[2
]}

Narevicius, E. ^{[2
]}

Signorell, R. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland

[2] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2021年 / 23卷 / 02期

基金：

瑞士国家科学基金会; 以色列科学基金会;

关键词：

STERN-GERLACH DEFLECTION; INTRAMOLECULAR SPIN RELAXATION; ELECTRON; SPECTROSCOPY; COMPLEXES; SPECTRUM; WATER; PHOTOIONIZATION; FRAGMENTATION; PHOTOELECTRON;

D O I：

10.1039/d0cp04647g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We describe the setup and the performance of a new pulsed Stern-Gerlach deflector and present results for small sodium-doped ammonia clusters Na(NH3)(n) (n = 1-4) in a molecular beam. NaNH3 shows the expected deflection of a spin 1/2 system, while all lager clusters show much smaller deflections. Experimental deflection ratios are compared with the values calculated from molecular dynamics simulations. The comparison reveals that intracluster spin relaxation in NaNH3 takes place on a time scale significantly longer than 200 mu s. Assuming that intracluster relaxation is the cause of the reduced deflection, relaxation times seem to be on the order of 200 mu s for all larger clusters Na(NH3)(n) (n = 2-4). Our work is a first attempt to understand the magnetic properties of isolated, weakly-bound clusters with relevance to the variety of diamagnetic and paramagnetic species expected in solvated electron systems.

引用

页码：846 / 858

页数：14

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