|
|
|
篇目详细内容 |
|
【篇名】 |
Generation of CW cold CH3CN molecular beam by a bent electostatic quadrupole guiding: Monte-Carlo study |
|
【刊名】 |
Frontiers of Physics in China |
|
【刊名缩写】 |
Front. Phys. China |
|
【ISSN】 |
1673-3487 |
|
【EISSN】 |
1673-3606 |
|
【DOI】 |
10.1007/s11467-008-0005-3 |
|
【出版社】 |
Higher Education Press and Springer-Verlag |
|
【出版年】 |
2008 |
|
【卷期】 |
3
卷1期 |
|
【页码】 |
19-25
页,共
7
页 |
|
【作者】 |
YUN Min;
LIU Yang;
DENG Lian-zhong;
ZHOU Qi;
YIN Jian-ping;
|
|
【关键词】 |
trapping; Zeeman and Stark effect; atomic and molecular beam sources and techniques; methyl cyanide |
【摘要】 |
|
A new kind of continuous-wave (CW) cold molecular beam, methyl cyanide (CH3CN) beam, is generated by a bent electrostatic quadrupole guiding. The Stark shift of rotational energy levels of CH3CN molecule and its population distribution are calculated, and the dynamic processes of electrostatic guiding and energy filtering of CH3CN molecules from a gas source with room temperature (300 K) are simulated by Monte Carlo Method. The study showed that the longitudinal and transversal temperatures of output cold CH3CN beam could be about ∼ 2 K and ∼ 420 mK, and the corresponding guiding efficiency was about 10-5 as the guiding voltage was 3 kV. Furthermore, the temperature of the guided molecules and its guiding efficiency can be controlled by adjusting the guiding voltages applied on electrodes. |
|
