[HTML][HTML] Ab initio calculation of fluid properties for precision metrology
Recent advances regarding the interplay between ab initio calculations and metrology are
reviewed, with particular emphasis on gas-based techniques used for temperature and …
reviewed, with particular emphasis on gas-based techniques used for temperature and …
Advances in cold atom UHV/XHV metrology
X Wu, Y Cheng, M Dong, W Sun, S Zhang, Z Ma, Y Li… - Vacuum, 2023 - Elsevier
Cold atom vacuum metrology is a technique for linking science and applications of cold
atom and vacuum sensing based on a fundamental atomic property, the collision cross …
atom and vacuum sensing based on a fundamental atomic property, the collision cross …
Accurate measurement of the loss rate of cold atoms due to background gas collisions for the quantum-based cold atom vacuum standard
We present the measurements of thermalized collisional rate coefficients for ultra-cold 7 Li
and 87 Rb colliding with room-temperature He, Ne, N 2, Ar, Kr, and Xe. In our experiments, a …
and 87 Rb colliding with room-temperature He, Ne, N 2, Ar, Kr, and Xe. In our experiments, a …
Comparison of two multiplexed portable cold-atom vacuum standards
We compare the vacuum measured by two portable cold-atom vacuum standards (pCAVSs)
based on ultracold 7 Li atoms. pCAVSs are quantum-based standards that use a priori …
based on ultracold 7 Li atoms. pCAVSs are quantum-based standards that use a priori …
Precise quantum measurement of vacuum with cold atoms
We describe the cold-atom vacuum standards (CAVS) under development at the National
Institute of Standards and Technology (NIST). The CAVS measures pressure in the ultra …
Institute of Standards and Technology (NIST). The CAVS measures pressure in the ultra …
Elastic and glancing-angle rate coefficients for heating of ultracold Li and Rb atoms by collisions with room-temperature noble gases, H2, and N2
Trapped ultracold alkali-metal atoms can be used to measure pressure in the ultra-high-
vacuum and XHV pressure regimes, those with p< 10− 6 Pa. This application for ultracold …
vacuum and XHV pressure regimes, those with p< 10− 6 Pa. This application for ultracold …
Trapped-particle evolution driven by residual gas collisions
We present a comprehensive mathematical model and experimental measurements for the
evolution of a trapped-particle ensemble driven by collisions with a room-temperature …
evolution of a trapped-particle ensemble driven by collisions with a room-temperature …
Cross-calibration of atomic pressure sensors and deviation from quantum diffractive collision universality for light particles
The room-temperature, velocity-averaged, total cross section for atom–atom and atom–
molecule collisions can be approximated using a universal function depending only on the …
molecule collisions can be approximated using a universal function depending only on the …
Measurement of Rb-Rb van der Waals coefficient via quantum diffractive universality
Collisions between trapped atoms or trapped molecules with room-temperature particles in
the surrounding vacuum induce loss of the trapped population at a rate proportional to the …
the surrounding vacuum induce loss of the trapped population at a rate proportional to the …
Boundaries of universality of thermal collisions for atom-atom scattering
Thermal rate coefficients for some atomic collisions have been observed to be remarkably
independent of the details of interatomic interactions at short range. This makes these rate …
independent of the details of interatomic interactions at short range. This makes these rate …