Chin. Phys. Lett.  2008, Vol. 25 Issue (4): 1362-1364    DOI:
Original Articles |
Experimental Research of Spontaneous Evolution from Ultracold Rydberg Atoms to Plasma
ZHANG Lin-Jie;FENG Zhi-Gang;LI An-Ling;ZHAO Jian-Ming;LI Chang-Yong;JIA Suo-Tang
State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006
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ZHANG Lin-Jie, FENG Zhi-Gang, LI An-Ling et al  2008 Chin. Phys. Lett. 25 1362-1364
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Abstract The spontaneous evolution from ultracold Rydberg atoms to plasma is investigated in a caesium MOT by using the method of field ionization. The plasma transferred from atoms in different Rydberg states (n=22--32) are obtained experimentally. Dependence of the threshold time of evolving to
plasma and the threshold number of initial Rydberg atoms on the principal quantum number of initial Rydberg states is studied. The experimental results are in agreement with hot--cold Rydberg--Rydberg atom collision ionization theory.
Keywords: 52.27.Gr      32.80.Zb     
Received: 23 November 2007      Published: 31 March 2008
PACS:  52.27.Gr (Strongly-coupled plasmas)  
  32.80.Zb (Autoionization)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I4/01362
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ZHANG Lin-Jie
FENG Zhi-Gang
LI An-Ling
ZHAO Jian-Ming
LI Chang-Yong
JIA Suo-Tang
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