该研究团队报道了实验上测定的3He*的23S1(F=3/2,mF=3/2)态与4He*的23S1(mJ=1)态之间的,组分间s-波散射长度a34。
研究人员通过在4He* 的被俘获玻色-爱因斯坦凝聚体中,诱导振荡来确定a34,并测量了由于3 He*原子的存在而引起的振荡的阻尼率。
研究人员测得的散射长度值为a34=30±4纳米,与理论预测结果吻合良好。了解这一散射长度,对于许多涉及这两种氦同位素的基本实验具有重要意义。
附:英文原文
Title: Measurement of the -wave scattering length between metastable helium isotopes
Author: S. Kannan, Y. S. Athreya, A. H. Abbas*, X. T. Yan, S. S. Hodgman, and A. G. Truscott†
Issue&Volume: 2024-12-26
Abstract: We report the experimental determination of the interspecies s-wave scattering length (a34) between the 23S1(F=3/2,mF=3/2) state of 3He*and the 23S1(mJ=1)state of 4He* . We determine a34 by inducing oscillations in a trapped Bose-Einstein condensate of 4He* and measuring the damping rate of these oscillations due to the presence of 3 He*atoms. Our measured value of a34=30±4 nm is in good agreement with theoretical predictions. The knowledge of this scattering length is important for many fundamental experiments between these helium isotopes.
DOI: https://doi.org/10.1103/PhysRevA.110.063324
Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.063324
Physical Review A:《物理评论A》,创刊于1970年。隶属于美国物理学会,最新IF:2.97
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