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Large numbers of cold metastable helium atoms in a magneto-optical trap
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tol, Paul J. J. Herschbach, Norbert Hessels, Eric A. Hogervorst, Wim Vassen, Wim |
| Copyright Year | 1999 |
| Abstract | We report loading of 1.5310 metastable triplet helium atoms in a large magneto-optical trap, using far-red-detuned laser beams. We fully characterized this trap by measuring trap losses and absorption of a probe beam. From the highly nonexponential trap decay we derive Penning ionization loss rate coefficients for two detunings: 5.3(9)310 cm/s at 235 MHz and 3.7(6)310 cm/s at 244 MHz. Also, we find that the loss rate is maximum at 25 MHz detuning, where the rate is 1.3(3)310 cm/s, much larger than recent theoretical and experimental values. In the absence of light the S-S ionization rate constant is measured to be 1.3(2)310 cm/s. @S1050-2947~99!51408-X# |
| Starting Page | 761 |
| Ending Page | 764 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevA.60.R761 |
| Volume Number | 60 |
| Alternate Webpage(s) | http://www.nat.vu.nl/en/Images/Trap_tcm208-85406.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
