Negative-Ion Formation upon Soft X-ray Photoexcitation of 2-Propanol
Kivimäki, Antti; Pelimanni, Eetu; Chernenko, Kirill; Abid, Abdul Rahman; Stråhlman, Christian (2025-02-27)
American chemical society
27.02.2025
Kivimäki, A., Pelimanni, E., Chernenko, K., Abid, A. R., & Stråhlman, C. (2025). Negative-ion formation upon soft x-ray photoexcitation of 2-propanol. The Journal of Physical Chemistry A, 129(10), 2454–2461. https://doi.org/10.1021/acs.jpca.4c08226
https://creativecommons.org/licenses/by/4.0/
© 2025 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0.
https://creativecommons.org/licenses/by/4.0/
© 2025 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0.
https://creativecommons.org/licenses/by/4.0/
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202502281873
https://urn.fi/URN:NBN:fi:oulu-202502281873
Tiivistelmä
Abstract
This study investigates the formation of negative ion fragments from gas-phase 2-propanol molecules after interaction with soft X-rays near the O K-edge. The experiment was performed by detecting negative and positive ions in coincidence with time-of-flight spectrometry. The analysis of two- and three-ion coincidence data revealed that nine different anions were produced: H–, C–, CH–, CH2–, O–, OH–, C2–, C2H–, and C3–. For all anions, the most common three-ion events were those involving two protons. The results highlight the sensitivity of negative-ion/positive-ion coincidence spectroscopy and provide new insight into the fragmentation processes of organic molecules under soft X-ray excitation.
This study investigates the formation of negative ion fragments from gas-phase 2-propanol molecules after interaction with soft X-rays near the O K-edge. The experiment was performed by detecting negative and positive ions in coincidence with time-of-flight spectrometry. The analysis of two- and three-ion coincidence data revealed that nine different anions were produced: H–, C–, CH–, CH2–, O–, OH–, C2–, C2H–, and C3–. For all anions, the most common three-ion events were those involving two protons. The results highlight the sensitivity of negative-ion/positive-ion coincidence spectroscopy and provide new insight into the fragmentation processes of organic molecules under soft X-ray excitation.
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