@article{
 title = {Counting efficiency of condensation particle counters at low-pressures with illustrative data from the upper troposphere},
 type = {article},
 year = {2001},
 identifiers = {[object Object]},
 pages = {975-991},
 volume = {32},
 id = {57e8f2fc-f5b6-3e62-b0ba-ead3c1396c99},
 created = {2015-05-08T02:28:35.000Z},
 file_attached = {true},
 profile_id = {f8c267c4-4c39-31dc-80fa-3a9691373386},
 group_id = {63e349d6-2c70-3938-9e67-2f6483f6cbab},
 last_modified = {2015-05-08T04:44:03.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 abstract = {The low-pressure counting efficiency of three modified condensation particle counters (CPCs, TSI Model 7610) was investigated. In this study, we describe the modifications of the counters, present a 'new' low-pressure calibration set-up, and show the resulting CPC counting efficiency curves as function of operating pressure (160-1000hPa) and temperature difference between the saturator and condenser block (10.5-26.0??C). Furthermore, particle coincidence in the CPC optics was studied. The presented CPCs are able to measure particle number concentrations of up to 40,000 particles/cm3 at pressures down to 160hPa. The lower threshold diameter of the CPCs can be varied between 4 and 23nm. Copyright ?? 2001 Elsevier Science Ltd.},
 bibtype = {article},
 author = {Hermann, M. and Wiedensohler, a.},
 journal = {Journal of Aerosol Science}
}

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