TY - RPRT TI - Dynamics of Trace Methane Diffusion/Flow Into Hollow Core Fiber Using Laser Absorption Spectroscopy AU - Challener, William A. AU - Kasten, Ansas M. AU - Yu, Fei (ORCID:000000021831859X) AU - Puc, Gabriel AU - Mangan, Brian J. PY - 2021 DO - 10.1109/jsen.2020.3042345 UR - https://www.osti.gov/biblio/1848196 ID - 1848196 ER -