Many-body explosion of SF3+6 is investigated by the coincidence momentum imaging technique. Investigation is focused on the F +:F+:F+ dissociative channel. The momentum map of these channels indicates that the loss of neutral F from SF3+ 6 occurs in the first step of the break-up followed by Coulomb explosion of the residue. The angular correlation between each F+ ion is used to figure out the nature of explosion. The scalar product of three momentum vectors is determined for estimating the co-planarity of all three ejected F+ ions. From the analysis of angular correlation for coplanar and orthogonal ejection of F+ions, we conclude that there are two dominant conformations of SF3+3. © 2010 IOP Publishing Ltd.

R K KUSHAWAHA

M R JANA

I A PRAJAPATI

C P SAFVAN

B BAPAT

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Triple F+ ejection from SF6 bombarded by swift ions

Journal of Physics B: Atomic, Molecular and Optical Physics

We investigate the angular dependence of the triple fragmentation of CO3+2, formed by the absorption of linearly polarized 200 eV photons. Complete momentum mapping of all fragment ions (C+, O+, O+) enables us to determine the plane of fragmentation and its orientation w.r.t. the polarization axis. While the C+ ions are found to be preferentially ejected perpendicular to the polarization axis, the plane spanned by the velocity vectors of the three fragments is found to contain the polarization axis. The distribution of the angles between the velocity vectors is mapped to the O = C = O bond angle of the precursor under the Coulomb explosion model. The mapping shows that the triple ionization at this energy proceeds from the normal state of CO2. In the light of this we are led to the surprising conclusion that non-resonant photo-triple-ionization preferentially occurs in those CO2 molecules whose C2v symmetry axis is nearly perpendicular to the polarization axis. © 2009 IOP Publishing Ltd.

Polarization dependence in non-resonant photo-triple-ionization of CO 2

Fragmentation of S F6 3+, formed from S F6 by absorption of soft x-ray photons, has been investigated using a momentum imaging time-of-flight spectrometer. We observe triple ion coincidences between two F+ ions and S Fm+ where m=0,...,3. Strong correlation between the momentum distributions of the two F+ ions is observed across all dissociation channels involving triple ion coincidences. We present a method of estimating the contribution of the neutral fragments to the kinematics of ion ejection based on the scalar triple product of the ion momentum vectors. The noncoplanarity of the three ion ejecta inferred in this manner allows us to discern the fragmentation sequence of S F6 3+. The proposed sequence is loss of a neutral F followed by violent ejection of two F+ ions and gentle removal of remaining F atoms from S F3+. © 2008 The American Physical Society.

Physical Review A - Atomic, Molecular, and Optical Physics

Breakup of the S F6 3+ photoion revealed by momentum correlation between fragments

Radiation Physics and Chemistry

Ion-pair production due to electron-impact dissociative ionization of sulfur hexafluoride molecule

The European Physical Journal D

An apparatus for studying momentum-resolved electron-impact dissociative and non-dissociative ionisation

Physical Review A

Partial dissociative ionization ofSF6by electron impact using an ejected electron-ion coincidence technique

Journal	Data powered by TypesetJournal of Physics B: Atomic, Molecular and Optical Physics
Publisher	Data powered by TypesetIOP PUBLISHING LTD
ISSN	0953-4075