期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.063201
关键词
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资金
- Eliteforder programm der Landesstiftung Baden-Wurttemberg
- Deutsche Forschungsgemeinschaft [2592/2-1]
We have studied the negative ion reaction NH(2)(-) + H(2) -> NH(3) + H(-) in the temperature range from 300 to 8 K. We observe a strongly suppressed probability for proton transfer at room temperature. With decreasing temperature, this probability increases, in accordance with a longer lifetime of an intermediate anion-neutral complex. At low temperatures, a maximum in the reaction rate coefficient is observed that suggests the presence of a very small barrier at long range or a quantum mechanical resonance feature.
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