Abstract
The pendular spectra of linear ( H C C C N ) n ( n = 1 − 3 ) molecules at several rotational temperatures under a certain range of electric field strength E are calculated using the finite element matrix diagonalization method. In addition, the normalized “ Q -branch” intensity ( I Q ) and the gradient ( K E ) of I Q under corresponding conditions are investigated. Based on the results, the range and sensitivity of measuring the electric field strength with linear ( H C C C N ) n ( n = 1 − 3 ) molecules are analyzed. A scheme to measure electric field strength based on ( H C C C N ) n ( n = 1 − 3 ) with high sensitivity is proposed and the spatial resolution is also discussed. The feasibility of measuring the electric field strength of the electrostatic Stark decelerator based on a pendular spectrum is studied.
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