Year: 2019
Type: article
Abstract: Compact ultracold-atom sensors using a single vacuum chamber have their stability ultimately constrained by vacuum dynamics. To speed evacuation, the straightforward approach is to increase the pumping speed, which implies increasing pump size and sensor volume. This investigation of the dynamics of sputtered ion pumps (SIPs) describes the main physical mechanisms with a nonlinear model for ion-current pump-down in the low-pressure regime. One pumping process suggests that a structured cathode could curtail the increase in pump size, or at least maintain the trapping cross section of the electrode---a result that may be important in the design and development of miniature ion pumps.
Source: Physical Review Applied
Authors: Jean-Marc Martin, Satyanarayana Bade, William Dubosclard, Murtaza Ali Khan, Seungjin Kim, Barry M. Garraway, Carlos L. Garrido Alzar
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2962945153