Buffer-gas cooling of NH via the beam loaded buffer-gas method

被引:67
作者
Egorov, D [1 ]
Campbell, WC [1 ]
Friedrich, B [1 ]
Maxwell, SE [1 ]
Tsikata, E [1 ]
van Buuren, LD [1 ]
Doyle, JM [1 ]
机构
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
关键词
D O I
10.1140/epjd/e2004-00140-1
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
NH radicals from a molecular beam are cooled using a novel beam-loaded buffer gas method. The radicals are produced in a glow discharge beam source and injected into cryogenic helium gas. Up to 10(12) molecules in their ground electronic, vibrational, and rotational state are detected in the buffer gas and translational temperatures under 6 K are achieved. The cooling method presented is general and can be applied to any molecules in a molecular beam.
引用
收藏
页码:307 / 311
页数:5
相关论文
共 39 条
[1]   OBSERVATION OF BOSE-EINSTEIN CONDENSATION IN A DILUTE ATOMIC VAPOR [J].
ANDERSON, MH ;
ENSHER, JR ;
MATTHEWS, MR ;
WIEMAN, CE ;
CORNELL, EA .
SCIENCE, 1995, 269 (5221) :198-201
[2]  
Bahns JT, 1996, J CHEM PHYS, V104, P9689, DOI 10.1063/1.471731
[3]   Chemistry at ultracold temperatures [J].
Balakrishnan, N ;
Dalgarno, A .
CHEMICAL PHYSICS LETTERS, 2001, 341 (5-6) :652-656
[4]   Superfluid pairing in a polarized dipolar Fermi gas [J].
Baranov, MA ;
Mar'enko, MS ;
Rychkov, VS ;
Shlyapnikov, GV .
PHYSICAL REVIEW A, 2002, 66 (01) :10-136061
[5]   Decelerating neutral dipolar molecules [J].
Bethlem, HL ;
Berden, G ;
Meijer, G .
PHYSICAL REVIEW LETTERS, 1999, 83 (08) :1558-1561
[6]   Cold collisions of O2 with helium -: art. no. 032701 [J].
Bohn, JL .
PHYSICAL REVIEW A, 2000, 62 (03)
[7]  
CARR LD, 2004, PHYS REV LETT, V92
[8]   Ammonia detection by use of near-infrared diode-laser-based overtone spectroscopy [J].
Claps, R ;
Englich, FV ;
Leleux, DP ;
Richter, D ;
Tittel, FK ;
Curl, RF .
APPLIED OPTICS, 2001, 40 (24) :4387-4394
[9]   Jet-cooled molecular radicals in slit supersonic discharges: Sub-Doppler infrared studies of methyl radical [J].
Davis, S ;
Anderson, DT ;
Duxbury, G ;
Nesbitt, DJ .
JOURNAL OF CHEMICAL PHYSICS, 1997, 107 (15) :5661-5675
[10]   Buffer-gas loaded magnetic traps for atoms and molecules: A primer [J].
deCarvalho, R ;
Doyle, JM ;
Friedrich, B ;
Guillet, T ;
Kim, J ;
Patterson, D ;
Weinstein, JD .
EUROPEAN PHYSICAL JOURNAL D, 1999, 7 (03) :289-309