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A New Desirable Molecular Species for Stark Deceleration |
| FU Guang-Bin;DENG Lian-Zhong;YIN Jian-Ping |
| State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062 |
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| Cite this article: |
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FU Guang-Bin, DENG Lian-Zhong, YIN Jian-Ping 2008 Chin. Phys. Lett. 25 923-926 |
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Abstract We demonstrate a new molecular sample (CH radical) for Stark deceleration by Monte Carlo simulation, study the dependences of the decelerating effect on the different phase angles, stage number and decelerating voltages, and obtain some new optimized conditions and parameters. We also calculate the Stark energy shift of different quantum states of CH radical in the Stark
decelerator electrostatic field and their populations in a supersonic CH molecular beam. Our study shows that the mean velocity of the supersonic CH molecular beam in the 2π1/2 state can be decelerated from 380m/s to 24m/s, and the corresponding translation temperature is lowered from 2.8K to 27mK. It is thus clear that the CH radical is a new and desirable candidate for Stark
deceleration.
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| Keywords:
33.80.Ps
33.55.Be
39.10.+j
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Received: 19 November 2007
Published: 27 February 2008
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