Three-dimensional velocity map imaging of KBr surface photochemistry.

نویسندگان

  • Sven P K Koehler
  • Yuanyuan Ji
  • Daniel J Auerbach
  • Alec M Wodtke
چکیده

We have combined the velocity map imaging technique with time-of-flight measurements to study the surface photochemistry of KBr single crystals. This approach yields 3-dimensional velocity distributions of Br atoms resulting from 193 nm photodesorption. The velocity distributions indicate that at least two non-thermal mechanisms contribute to the photodesorption dynamics. Our experimental geometry also allows us to measure the Br(2P3/2):Br(2P1/2) branching ratio, which is found to be 24:1.

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عنوان ژورنال:
  • Physical chemistry chemical physics : PCCP

دوره 11 35  شماره 

صفحات  -

تاریخ انتشار 2009