TY - JOUR
T1 - Focusing ions by viscous drag and weak electric fields in an ion guide
AU - Iivonen, A.
AU - Riikonen, K.
AU - Saintola, R.
AU - Valli, K.
AU - Morita, K.
PY - 1991/9/15
Y1 - 1991/9/15
N2 - A new special ion guide has one or more grids at low electric potential in the space between nozzle and skimmer. Viscous drag caused by helium flow is used together with weak electric fields for focusing ions through the skimmer. A typical yield through the skimmer is 75% of that through the nozzle. The focusing device is called a "squeezer". Most properties of the "squeezer ion guide" are similar to those of an ordinary ion guide. Because the kinetic energies are only of the order of 10 eV, however, problems caused by ion scattering are greatly reduced as compared to ordinary ion guides.
AB - A new special ion guide has one or more grids at low electric potential in the space between nozzle and skimmer. Viscous drag caused by helium flow is used together with weak electric fields for focusing ions through the skimmer. A typical yield through the skimmer is 75% of that through the nozzle. The focusing device is called a "squeezer". Most properties of the "squeezer ion guide" are similar to those of an ordinary ion guide. Because the kinetic energies are only of the order of 10 eV, however, problems caused by ion scattering are greatly reduced as compared to ordinary ion guides.
UR - http://www.scopus.com/inward/record.url?scp=30244565217&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=30244565217&partnerID=8YFLogxK
U2 - 10.1016/0168-9002(91)90132-A
DO - 10.1016/0168-9002(91)90132-A
M3 - Article
AN - SCOPUS:30244565217
VL - 307
SP - 69
EP - 79
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1
ER -