Characterization of alkali metal dispensers and non-evaporable getter pumps in ultrahigh vacuum systems for cold atomic sensors
Characterization of alkali metal dispensers and non-evaporable getter pumps in ultrahigh vacuum systems for cold atomic sensors
复制标题
DOI：
10.1116/1.4757950
复制
发表时间：
2012-11-01
影响因子：
2.9
通讯作者：
Hensley, Joel M.
中科院分区：
文献类型：
--
作者：
Scherer, David R.;Fenner, David B.;Hensley, Joel M.
已经开发出带有铷碱金属分配器和非蒸发吸气泵的玻璃超高真空室，并用于在仅使用被动真空泵运行的室中创建冷原子样品。来自碱金属分配器的蒸发气体的离子质谱已被记录为分配器电流的函数。非蒸发吸气泵在促进和维持真空方面的功效已通过观察 780 nm 处 D-2 跃迁上的 Rb 蒸气光学吸收和真空室压力上升速率测试来表征。作者展示了该室内的激光冷却铷原子样本，该样本是在没有主动真空泵的情况下隔离和运行的。 (C) 2012 年美国真空协会。 [http://dx.doi.org/10.1116/1.4757950]
A glass ultrahigh vacuum chamber with rubidium alkali metal dispensers and nonevaporable getter pumps has been developed and used to create a cold atomic sample in a chamber that operates with only passive vacuum pumps. The ion-mass spectrum of evaporated gases from the alkali metal dispenser has been recorded as a function of dispenser current. The efficacy of the nonevaporable getter pumps in promoting and maintaining vacuum has been characterized by observation of the Rb vapor optical absorption on the D-2 transition at 780 nm and vacuum chamber pressure rate of rise tests. The authors have demonstrated a sample of laser-cooled Rb atoms in this chamber when isolated and operating without active vacuum pumps. (C) 2012 American Vacuum Society. [http://dx.doi.org/10.1116/1.4757950]