Electrostatic trapping of metastable NH molecules

被引：53

作者：

Hoekstra, Steven ^{[1
]}

Metsaelae, Markus ^{[1
]}

Zieger, Peter C. ^{[1
]}

Scharfenberg, Ludwig ^{[1
]}

Gilijamse, Joop J. ^{[1
]}

Meijer, Gerard ^{[1
]}

van de Meerakker, Sebastiaan Y. T. ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.76.063408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the Stark deceleration and electrostatic trapping of (NH)-N-14 (a(1)Delta) radicals. In the trap, the molecules are excited on the spin-forbidden A(3)Pi <- a(1)Delta transition and detected via their subsequent fluorescence to the X-3 Sigma(-) ground state. The 1/e trapping time is 1.4 +/- 0.1 s, from which a lower limit of 2.7 s for the radiative lifetime of the a(1)Delta, v=0, J=2 state is deduced. The spectral profile of the molecules in the trapping field is measured to probe their spatial distribution. Electrostatic trapping of metastable NH followed by optical pumping of the trapped molecules to the electronic ground state is an important step toward accumulation of these radicals in a magnetic trap.

引用

页数：6

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