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Experimental investigation of a rubi...

Busch, Hauke Christian.

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Experimental investigation of a rubidium-argon dual species magneto-optical trap.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Experimental investigation of a rubidium-argon dual species magneto-optical trap./
作者:	Busch, Hauke Christian.
面頁冊數:	156 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1914.
Contained By:	Dissertation Abstracts International65-04B.
標題:	Physics, Atomic. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3128721
ISBN:	0496759832

Experimental investigation of a rubidium-argon dual species magneto-optical trap.
Busch, Hauke Christian.

Experimental investigation of a rubidium-argon dual species magneto-optical trap. - 156 p.

Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1914.

Thesis (Ph.D.)--Old Dominion University, 2004.

The first simultaneous cooling and confinement of two different atomic species from opposite sides of the periodic table in a dual magneto optical trap (DMOT) has been accomplished. The alkali-metal 85Rb and the noble gas 40Ar* have been simultaneously confined, characterized, and interspecies interaction parameters have been measured. The DMOT confined 1.2 x 106 85Rb atoms at a density of 1 x 1010/cm3 and 1.4 x 106 40Ar* atoms with a density of 1.2 x 10 10/cm3. A collisional loss rate coefficient for Rb-Ar* has been determined to be gammaRb-Ar, = (4.8 +/- 1.6) x 10-11cm3/s. A typical reduction of 3% of the florescence of the trapped 85Rb was observed when the 40Ar* trap was present. The loss of atoms from the dual trap is presumed to be caused by radiative escape and ionization losses, for an 40Ar* MOT it is due to Penning and associative ionization losses. An Ar* PI/AI ionization ratio of 6.7 +/- 3.6 was determined, which makes the Penning ionization rate the dominant loss mechanism. The ionization rate was obtained with a SRS RGA200 mass spectrum analyzer specifically modified to work in conjunction with an ion optical field plate setup to collect the ions expelled from the MOT. The 85 Rb was trapped with a 780 nm diode laser while the 40Ar* was slowed and trapped with a 811 nm Ti:sapphire laser, which was specifically modified to be locked to within 1 MHz of the atomic transition with a linewidth of &sim;1 MHz. The metastable state 40Ar* was produced with a rf driven resonating cavity discharge which produced an atomic beam with an angular flux density of 4 x 1014 atoms s-1 sr-1.

ISBN: 0496759832Subjects--Topical Terms:

1029235
Physics, Atomic.

Experimental investigation of a rubidium-argon dual species magneto-optical trap.
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245 1 0 $a Experimental investigation of a rubidium-argon dual species magneto-optical trap.
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502 $a Thesis (Ph.D.)--Old Dominion University, 2004.
520 $a The first simultaneous cooling and confinement of two different atomic species from opposite sides of the periodic table in a dual magneto optical trap (DMOT) has been accomplished. The alkali-metal 85Rb and the noble gas 40Ar* have been simultaneously confined, characterized, and interspecies interaction parameters have been measured. The DMOT confined 1.2 x 106 85Rb atoms at a density of 1 x 1010/cm3 and 1.4 x 106 40Ar* atoms with a density of 1.2 x 10 10/cm3. A collisional loss rate coefficient for Rb-Ar* has been determined to be gammaRb-Ar, = (4.8 +/- 1.6) x 10-11cm3/s. A typical reduction of 3% of the florescence of the trapped 85Rb was observed when the 40Ar* trap was present. The loss of atoms from the dual trap is presumed to be caused by radiative escape and ionization losses, for an 40Ar* MOT it is due to Penning and associative ionization losses. An Ar* PI/AI ionization ratio of 6.7 +/- 3.6 was determined, which makes the Penning ionization rate the dominant loss mechanism. The ionization rate was obtained with a SRS RGA200 mass spectrum analyzer specifically modified to work in conjunction with an ion optical field plate setup to collect the ions expelled from the MOT. The 85 Rb was trapped with a 780 nm diode laser while the 40Ar* was slowed and trapped with a 811 nm Ti:sapphire laser, which was specifically modified to be locked to within 1 MHz of the atomic transition with a linewidth of &sim;1 MHz. The metastable state 40Ar* was produced with a rf driven resonating cavity discharge which produced an atomic beam with an angular flux density of 4 x 1014 atoms s-1 sr-1.
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