English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Single-field slice-imaging with a movable repeller: Photodissociation of N2O from a hot nozzle.

Harding, D. J., Neugebohren, J., Grütter, M., Schmidt-May, A. F., Auerbach, D. J., Kitsopoulos, T. N., et al. (2014). Single-field slice-imaging with a movable repeller: Photodissociation of N2O from a hot nozzle. The Journal of Chemical Physics, 141(5): 054201. doi:10.1063/1.4891469.

Item is

Files

show Files
hide Files
:
2051435.pdf (Publisher version), 2MB
Name:
2051435.pdf
Description:
-
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Creators

show
hide
 Creators:
Harding, D. J.1, Author           
Neugebohren, J.1, Author           
Grütter, M.1, Author           
Schmidt-May, A. F.1, Author           
Auerbach, D. J.1, Author           
Kitsopoulos, T. N.1, Author           
Wodtke, A. M.1, Author           
Affiliations:
1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              

Content

show
hide
Free keywords: -
 Abstract: We present a new photo-fragment imaging spectrometer, which employs a movable repeller in a single field imaging geometry. This innovation offers two principal advantages. First, the optimal fields for velocity mapping can easily be achieved even using a large molecular beam diameter (5 mm); the velocity resolution (better than 1%) is sufficient to easily resolve photo-electron recoil in (2 + 1) resonant enhanced multiphoton ionization of N2 photoproducts from N2O or from molecular beam cooled N2. Second, rapid changes between spatial imaging, velocity mapping, and slice imaging are straightforward. We demonstrate this technique's utility in a re-investigation of the photodissociation of N2O. Using a hot nozzle, we observe slice images that strongly depend on nozzle temperature. Our data indicate that in our hot nozzle expansion, only pure bending vibrations – (0, v 2, 0) – are populated, as vibrational excitation in pure stretching or bend-stretch combination modes are quenched via collisional near-resonant V-V energy transfer to the nearly degenerate bending states. We derive vibrationally state resolved absolute absorption cross-sections for (0, v 2 ≤ 7, 0). These results agree well with previous work at lower values of v2, both experimental and theoretical. The dissociation energy of N2O with respect to the O(1D) + N2 Σg+1 asymptote was determined to be 3.65 ± 0.02 eV.

Details

show
hide
Language(s): eng - English
 Dates: 2014-08-042014-08-07
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.4891469
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: The Journal of Chemical Physics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: 9 Volume / Issue: 141 (5) Sequence Number: 054201 Start / End Page: - Identifier: -