Observation of spurious spectral features in mixed-powder compressed pellets measured by terahertz time-domain spectroscopy

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Murphy, Keir N and Markl, Daniel and Nordon, Alison and Naftaly, Mira (2023) Observation of spurious spectral features in mixed-powder compressed pellets measured by terahertz time-domain spectroscopy. IEEE Transactions on Terahertz Science & Technology, 13 (5). pp. 569-572. ISSN 2156-3446 (https://doi.org/10.1109/tthz.2023.3290118)

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Abstract

Spurious loss features were observed in mixed-powder compressed pellets measured in transmission using terahertz time-domain spectroscopy. Loss features were identified in two types of pellets: PTFE-glass microspheres and PTFE-lactose. The features were found to be dependent on grain size and concentration. An explanation is proposed, based on varying optical thickness of the sample material.

ORCID iDs

Murphy, Keir N, Markl, Daniel ORCID logoORCID: https://orcid.org/0000-0003-0411-733X, Nordon, Alison ORCID logoORCID: https://orcid.org/0000-0001-6553-8993 and Naftaly, Mira;
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