A system and method for heating an optically pumped bubble at different temperatures

Abstract

The invention discloses a system and a method for heating optical pumping bubbles by using different temperatures. The system comprises a processed empty optical pumping bubble bracket, a central temperature control unit, a temperature sensor, a heater, a liquid nitrogen storage device, four pipelines, three valve groups, two nitrogen cylinders, the optical pumping bubbles and a gas source, wherein the on / off of the heater is controlled by the central temperature control unit through the status of the temperature sensor, and the temperature statuses of the two ends of each optical pumping bubble is controlled by the on / off state of the heater. According to the system and the method, the structure is simple, the control is convenient, the first temperature of the optical pumping bubbles can be equalized, and the uniformity and orderliness of the operation of self-spin-exchange optical pumping reaction of alkali metals and inert gases in the optical pumping bubbles are guaranteed.

Description

technical field [0001] The present invention relates to the field of atomic and molecular physics devices, in particular to a system for heating optical pumping bubbles at different temperatures, and also to a method for heating optical pumping bubbles at different temperatures, which is applicable to hyperpolarized inert gas systems and used to heat the optical pumping bubble. Background technique [0002] The optical pumping phenomenon was first reported by Kastler in 1950 [J.Phys.Radium11(1950):255-265]. In the following time, the use of alkali metal Rb / Cs and inert gas 3 He / 83 Kr / 129 The hyperpolarized inert gas technology of spin-exchange optical pumping of Xe has gradually developed [RevModPhys.69(1)(1997):629-642]. The main principle of the spin exchange optical pumping phenomenon is that under the action of a laser with a certain wavelength, the outermost electrons of the alkali metal are excited to a high energy level state. At this time, the outermost electron...

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Problems solved by technology

[0004] The object of the present invention is to address the deficiencies in the prior art, to provide a system for heating optical pumping bubbles at different temperatures, and to provide a method for heating optical pumping bubbles at different temperatures, which solves the problem of the original heating device structure Bulk, low heat dissipation efficiency, electromagnetic interference, large temperature difference, uneven heating, large airflow fluctuations, etc.

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