Carter F W, Hertel S A, Rooks M J, McClintock P V E, McKinsey D N, Prober D E
Argonne National Laboratory, High Energy Physics, Lemont, IL 60439 USA.
Kavli Institute for Cosmological Physics, Chicago, IL 60637 USA.
J Low Temp Phys. 2017;186(3):183-196. doi: 10.1007/s10909-016-1666-x. Epub 2016 Oct 11.
We report the first calorimetric detection of individual excimers within a bath of superfluid . The detector used in this work is a single superconducting titanium transition edge sensor (TES) with an energy resolution of , immersed directly in the helium bath. excimers are produced in the surrounding bath using an external gamma-ray source. These excimers exist either as short-lived singlet or long-lived triplet states. We demonstrate detection (and discrimination) of both states: In the singlet case the calorimeter records the absorption of a prompt photon, and in the triplet case the calorimeter records a direct interaction of the molecule with the TES surface, which deposits a distinct fraction of the , released upon decay, into the surface. We also briefly discuss the detector fabrication and characterization.
我们报告了在超流浴中对单个准分子进行的首次量热检测。本工作中使用的探测器是一个能量分辨率为 的单个超导钛转变边缘传感器（TES），直接浸入氦浴中。使用外部伽马射线源在周围浴中产生准分子。这些准分子以短寿命单重态或长寿命三重态的形式存在。我们展示了对这两种状态的检测（和区分）：在单重态情况下，量热计记录即时光子的吸收，在三重态情况下，量热计记录分子与TES表面的直接相互作用，该相互作用将衰变时释放的 的不同部分沉积到表面。我们还简要讨论了探测器的制造和表征。
