Tampere University of Technology

TUTCRIS Research Portal

Negative‐ion/positive‐ion coincidence spectroscopy as a tool to identify anionic fragments: The case of core‐excited CHF3

Research output: Contribution to journalArticleScientificpeer-review

Standard

Negative‐ion/positive‐ion coincidence spectroscopy as a tool to identify anionic fragments: The case of core‐excited CHF3. / Kivimäki, Antti; Stråhlman, Christian; Sankari, Rami; Richter, Robert.

In: JOURNAL OF MASS SPECTROMETRY, 11.12.2019.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

APA

Vancouver

Author

Kivimäki, Antti ; Stråhlman, Christian ; Sankari, Rami ; Richter, Robert. / Negative‐ion/positive‐ion coincidence spectroscopy as a tool to identify anionic fragments: The case of core‐excited CHF3. In: JOURNAL OF MASS SPECTROMETRY. 2019.

Bibtex - Download

@article{e4db0cc54fec4f8c82f0a635ac525284,
title = "Negative‐ion/positive‐ion coincidence spectroscopy as a tool to identify anionic fragments: The case of core‐excited CHF3",
abstract = "We have studied the dissociation of the trifluoromethane molecule, CHF3, into negative ionic fragments at the C 1s and F 1s edges. The measurements were performed by detecting coincidences between negative and positive ions. We observed five different negative ions: F‐, H‐, C‐, CF‐, and F2‐. Their production was confirmed by the analysis of triple coincidence events (negative‐ion/positive‐ion/positive‐ion or NIPIPI coincidences) that were recorded with cleaner signals than those of the negative‐ion/positive‐ion coincidences. The intensities of the most intense NIPIPI coincidence channels were recorded as a function of photon energy across the C 1s and F 1s excitations and ionization thresholds. We also observed dissociation channels involving the formation of one negative ion and three positive ions. Our results demonstrate that negative‐ion/positive‐ion coincidence spectroscopy is a very sensitive method to observe anions, which at inner‐shell edges are up to three orders of magnitude less probable dissociation products than cations.",
author = "Antti Kivim{\"a}ki and Christian Str{\aa}hlman and Rami Sankari and Robert Richter",
year = "2019",
month = "12",
day = "11",
doi = "10.1002/jms.4487",
language = "English",
journal = "JOURNAL OF MASS SPECTROMETRY",
issn = "1076-5174",
publisher = "Wiley",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Negative‐ion/positive‐ion coincidence spectroscopy as a tool to identify anionic fragments: The case of core‐excited CHF3

AU - Kivimäki, Antti

AU - Stråhlman, Christian

AU - Sankari, Rami

AU - Richter, Robert

PY - 2019/12/11

Y1 - 2019/12/11

N2 - We have studied the dissociation of the trifluoromethane molecule, CHF3, into negative ionic fragments at the C 1s and F 1s edges. The measurements were performed by detecting coincidences between negative and positive ions. We observed five different negative ions: F‐, H‐, C‐, CF‐, and F2‐. Their production was confirmed by the analysis of triple coincidence events (negative‐ion/positive‐ion/positive‐ion or NIPIPI coincidences) that were recorded with cleaner signals than those of the negative‐ion/positive‐ion coincidences. The intensities of the most intense NIPIPI coincidence channels were recorded as a function of photon energy across the C 1s and F 1s excitations and ionization thresholds. We also observed dissociation channels involving the formation of one negative ion and three positive ions. Our results demonstrate that negative‐ion/positive‐ion coincidence spectroscopy is a very sensitive method to observe anions, which at inner‐shell edges are up to three orders of magnitude less probable dissociation products than cations.

AB - We have studied the dissociation of the trifluoromethane molecule, CHF3, into negative ionic fragments at the C 1s and F 1s edges. The measurements were performed by detecting coincidences between negative and positive ions. We observed five different negative ions: F‐, H‐, C‐, CF‐, and F2‐. Their production was confirmed by the analysis of triple coincidence events (negative‐ion/positive‐ion/positive‐ion or NIPIPI coincidences) that were recorded with cleaner signals than those of the negative‐ion/positive‐ion coincidences. The intensities of the most intense NIPIPI coincidence channels were recorded as a function of photon energy across the C 1s and F 1s excitations and ionization thresholds. We also observed dissociation channels involving the formation of one negative ion and three positive ions. Our results demonstrate that negative‐ion/positive‐ion coincidence spectroscopy is a very sensitive method to observe anions, which at inner‐shell edges are up to three orders of magnitude less probable dissociation products than cations.

U2 - 10.1002/jms.4487

DO - 10.1002/jms.4487

M3 - Article

JO - JOURNAL OF MASS SPECTROMETRY

JF - JOURNAL OF MASS SPECTROMETRY

SN - 1076-5174

ER -