zhao_2020
=========

X\. Zhao, X\. Yu, X\. Xu, Z\. Yin, J\. Yu, X\. Li, P\. Ma, D\. Zhang, C\. Wang, S\. Luo and D\. Ding, "Ultrafast dissociation dynamics of singly and doubly ionized N2O in strong laser fields", Phys\. Rev\. A 101, 013416 \(2020\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/zhao_2020.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1103/PhysRevA\.101\.013416 <https://doi.org/10.1103/PhysRevA.101.013416>`__

**Source kind:** measurement

**Recorded technique:** Strong\-field pump\-probe Coulomb explosion imaging of N2O in a COLTRIMS\: an 800 nm, ~35 fs, 1 kHz pump, linear, 1\.0 x 10^14 W/cm2, and an elliptical probe \(epsilon ~ 0\.7, 3\.5 x 10^14 W/cm2\), roles exchanged at negative delay; delays \-2 to 6 ps in 33\.3 fs steps, cross\-correlation 90 fs FWHM\. Only the three\-body channel N2O3\+ \-\> N\+ \+ N\+ \+ O\+ is analysed \(momentum\-sum condition \< 3 a\.u\.\) \(p\. 2\)\.

**Materials in structured entries:** None recorded.

**Dataset quantities:** None recorded.

**Contents:** 0 datasets; 0 formulas.

Curation notes
--------------

PRA 101, 013416, pages 013416\-1 to \-7 = pdf pages 1\-7\. Identity checked on pdf page 1 \(title, authors, journal line, DOI\)\. The same group and apparatus as zhao\_2023, which takes the two\-body channels and gives their KERs\.

WHY NO DATASETS \(TC\-970\)\. Every KER printed here is the Coulomb\-explosion energy of the triply charged ion the probe makes, a probe of the geometry at the delay, not the energy released by a dissociation of the pulse's products\: \- the KER bands \(p\. 2\)\: 17\-25 eV, delay independent \(triple ionisation by one pulse\); 1\.5\-7 eV \(the low band, assigned to N2O\+ ionised further\) and 7\-16 eV \(the high band, N2O2\+ ionised further\); the low band falls fast in the first 500 fs and slowly over the next few ps, the high band falls to 'around 8 eV in the first 200 fs' and stays constant \(p\. 2\)\. No time constant is fitted\. \- fragment energies in the probe's explosion \(pp\. 4\-6\)\: O\+ around 4 eV from the first step N2O2\+ \-\> N2\+ \+ O\+, constant with delay; N\+ around 5 eV from N2O2\+ \-\> N\+ \+ NO\+; the explosion of NO^2\+ \(NO\+ ionised by the probe\) about 9\.5 eV in total \(N\+ around 5, O\+ around 4\.5 eV\); the O\+ of the three\-body N\+ \+ N\+ \+ O channel falls from 1\.5 eV at 400 fs to 0\.5 eV at 1500 fs; in the N \+ N\+ \+ O\+ channel the ion from the neutral atom has about 1\.5 eV and the other two share about 7\.5 eV at 400 fs\.

STATES AND CHANNELS \(assignments, pp\. 1\-3, 5\-6\)\: the low KER band's fast fall is assigned to dissociation on N2O\+ B 2Pi, with significant bending before it dissociates \(Dalitz plots, Fig\. 3\), and with the concerted breakup dominant and the sequential breakup growing with delay\. N2O2\+\: X 3Sigma\-, 1 1Delta and 1 1Sigma\+ dissociate to N\+ \+ NO\+, the higher 1 3Pi and 1 1Pi to N2\+ \+ O\+ by coupling to other states \(quoted from their Refs\. 21, 31, 39\); two two\-body \(N\+ \+ NO\+, N2\+ \+ O\+\) and two three\-body \(N\+ \+ N \+ O\+, N\+ \+ N\+ \+ O\) channels of the dication are identified\.

QUOTED LIFETIMES \(p\. 1, not taken; the originals are not in the library\)\: N2O\+ A 2Sigma\+ vibrational levels 'tens to hundreds of nanoseconds' \(their Refs\. 20\-22\); B 2Pi 30 fs from two\-photon absorption spectroscopy \(Ref\. 23\); C 2Sigma\+ ~2 ps from ion\-electron coincidence \(Ref\. 24\)\. The fast decay of the low band is 'a little longer than the estimated lifetime of B 2Pi \(~30 fs\)' \(p\. 2; no number\)\.

FIGURES FOR LATER \(TC\-970\)\: Fig\. 2\(a\), the KER against delay \(a raster map with vector axes\), if a time constant of the B 2Pi dissociation is wanted; the delay\-resolved correlations \(Figs\. 4\-6, vector\) are not relevant to the products\.

**Recorded bibliographic identity status:** VALIDATED. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets
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No datasets are recorded.

Formulas
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No formulas are recorded.

Corrections
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No dataset errata are recorded in this source record.

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the :doc:`review register </register>` for the checks and decisions.