TY - JOUR
T1 - A new normalization method for electron collision cross sections measured using skimmed supersonic jet beams
AU - Hargreaves, L. R.
AU - Francis-Staite, J. R.
AU - Maddern, T. M.
AU - Brunger, M. J.
AU - Buckman, S. J.
PY - 2007/9/1
Y1 - 2007/9/1
N2 - Crossed electron-molecular beam experiments featuring skimmed nozzle beams may be used to study electron interactions with species such as radicals, excited molecules and biomolecules. A new technique for placing measured cross sections on an absolute scale is reported, as the traditional relative flow method used for effusive molecular beams does not apply to skimmed supersonic jet beams. Absolute cross sections for Ar and CF4, using this new procedure, are measured and compared to previous effusive beam results as a proof of concept.
AB - Crossed electron-molecular beam experiments featuring skimmed nozzle beams may be used to study electron interactions with species such as radicals, excited molecules and biomolecules. A new technique for placing measured cross sections on an absolute scale is reported, as the traditional relative flow method used for effusive molecular beams does not apply to skimmed supersonic jet beams. Absolute cross sections for Ar and CF4, using this new procedure, are measured and compared to previous effusive beam results as a proof of concept.
KW - Absolute differential cross sections
KW - Skimmed supersonic relative density method
KW - Supersonic expansion
UR - http://www.scopus.com/inward/record.url?scp=36348959565&partnerID=8YFLogxK
U2 - 10.1088/0957-0233/18/9/007
DO - 10.1088/0957-0233/18/9/007
M3 - Article
SN - 0957-0233
VL - 18
SP - 2783
EP - 2790
JO - Measurement Science and Technology
JF - Measurement Science and Technology
IS - 9
ER -