公开(公告)号：US20120112749A1

公开(公告)日：2012-05-10

申请号：US13286930

申请日：2011-11-01

申请人： Dmitry Budker ,  Micah Ledbetter ,  Todor Karaulanov ,  Mikhail V. Balabas

发明人： Dmitry Budker ,  Micah Ledbetter ,  Todor Karaulanov ,  Mikhail V. Balabas

IPC分类号： G01R33/00

CPC分类号： G01R33/1284 ,  G01R33/26 ,  G01R33/282

摘要： An atomic vapor cell apparatus and method for obtaining spin polarized vapor of alkali atoms with relaxation times in excess of one minute is provided. The interior wall of the vapor cell is coated with an alkene-based material. The preferred coatings are alkenes ranging from C18 to C30 and C20-C24 are particularly preferred. These alkene coating materials, can support approximately 1,000,000 alkali-wall collisions before depolarizing an alkali atom, an improvement by roughly a factor of 100 over traditional alkane-based coatings. Further, the method involves a combination of one or more of the following: the use of a locking device to isolate the atoms in the volume of the vapor cell from the sidearm used as a reservoir for the alkali metal vapor source, careful management of magnetic-field gradients, and the use of the spin-exchange-relaxation-free (SERF) technique for suppressing spin-exchange relaxation.

摘要翻译： 提供了一种用于获得超过一分钟的弛豫时间的碱性原子的旋转极化蒸气的原子蒸汽池装置和方法。 蒸气室的内壁涂覆有基于烯烃的材料。 优选的涂层是从C18到C30的烯烃，特别优选的是C20-C24。 这些烯烃涂层材料可以在碱性原子去极化之前支持大约100万个碱壁碰撞，比传统的烷烃基涂料改善约100倍。 此外，该方法涉及以下一个或多个的组合：使用锁定装置将蒸气室的体积中的原子与用作碱金属蒸气源的储存器的侧臂隔离，仔细管理磁性 - 场梯度，以及使用自旋交换松弛（SERF）技术来抑制自旋交换弛豫。