Isotopic Dependence of Vapor Pressure in Xenon

Amal Alamre; Ibtesam Badhrees; Brandon Death; Caio Licciardi; David Sinclair

doi:10.1021/acsomega.0c02883

Isotopic Dependence of Vapor Pressure in Xenon

ACS Omega. 2020 Nov 2;5(45):28977-28983. doi: 10.1021/acsomega.0c02883. eCollection 2020 Nov 17.

Authors

Amal Alamre¹, Ibtesam Badhrees¹, Brandon Death¹, Caio Licciardi², David Sinclair^{1

3}

Affiliations

¹ Physics Department, Carleton University, Ottawa, Ontario K1S 5B6, Canada.
² Department of Physics, Laurentian University, Sudbury, Ontario P3E 2C6, Canada.
³ TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.

Abstract

The vapor pressure isotopic effect (VPIE) of xenon has been measured using cryogenic distillation. The still is calibrated with argon and krypton and yields a measurement of ln(p ₁₃₀/p ₁₃₆) ≃ (0.26 ± 0.04) × 10^-3, where p ₁₃₀ and p ₁₃₆ are the vapor pressures of ¹³⁰Xe and ¹³⁶Xe at the nominal boiling point, respectively. The dependence of the VPIE across the isotopes for the three elements is found to be approximately linear with atomic mass, and all values are consistent with theoretical expectations.