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Vibrational relaxation of water at the air/H2O interface revealed by time-resolved heterodyne-detected vibrational sum-frequency generation in the OH stretch hot-band region

Woongmo Sung, Ken-ichi Inoue, Satoshi Nihonyanagi, and Tahei Tahara

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Abstract

Vibrational relaxation (T1) time of hydrogen-bonded OH of interfacial water was determined by TR-HD-VSFG spectroscopy to be 250 - 400 fs contrary to the previous report, while free-OH stretch shows noticeably slow (~1 ps) T1.

© 2020 The Author(s)

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