Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization

Itai S. Kallos; Ilana Bar; Joshua H. Baraban

doi:10.1021/acs.jpclett.4c00141

Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization

Itai S. Kallos, Ilana Bar, Joshua H. Baraban

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We report a new spectroscopic detection scheme for molecular oxygen that achieves roughly two orders of magnitude higher sensitivity for fully rotationally resolved spectra than the current state of the art. Two-color (2 + 1′) resonance-enhanced multiphoton ionization (REMPI) via the 3d Rydberg complex yields state-selective spectra with signal comparable to the intense but diffuse C 3sσ ³Π_g ← X ³Σ_g^- (2 + 1) REMPI bands without significant saturation or broadening. The resulting increase in sensitivity permitted observation of the very weak 3dπ ¹Δ₂ ← X ³Σ_g^- transitions and is independent of the intermediate state. This advance in ionization efficiency and quantum state-selective sensitivity for O₂ promises to aid physical and chemical studies across a wide variety of fields.

Original language	English
Pages (from-to)	2639-2642
Number of pages	4
Journal	Journal of Physical Chemistry Letters
Volume	15
Issue number	9
DOIs	https://doi.org/10.1021/acs.jpclett.4c00141
State	Published - 7 Mar 2024

ASJC Scopus subject areas

General Materials Science
Physical and Theoretical Chemistry

Access to Document

10.1021/acs.jpclett.4c00141

Cite this

@article{b82ff4b141074d42a24c2a13c17a4b04,

title = "Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization",

abstract = "We report a new spectroscopic detection scheme for molecular oxygen that achieves roughly two orders of magnitude higher sensitivity for fully rotationally resolved spectra than the current state of the art. Two-color (2 + 1′) resonance-enhanced multiphoton ionization (REMPI) via the 3d Rydberg complex yields state-selective spectra with signal comparable to the intense but diffuse C 3sσ 3Πg ← X 3Σg- (2 + 1) REMPI bands without significant saturation or broadening. The resulting increase in sensitivity permitted observation of the very weak 3dπ 1Δ2 ← X 3Σg- transitions and is independent of the intermediate state. This advance in ionization efficiency and quantum state-selective sensitivity for O2 promises to aid physical and chemical studies across a wide variety of fields.",

author = "Kallos, {Itai S.} and Ilana Bar and Baraban, {Joshua H.}",

note = "Publisher Copyright: {\textcopyright} 2024 American Chemical Society",

year = "2024",

month = mar,

day = "7",

doi = "10.1021/acs.jpclett.4c00141",

language = "English",

volume = "15",

pages = "2639--2642",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

number = "9",

}

TY - JOUR

T1 - Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization

AU - Kallos, Itai S.

AU - Bar, Ilana

AU - Baraban, Joshua H.

PY - 2024/3/7

Y1 - 2024/3/7

N2 - We report a new spectroscopic detection scheme for molecular oxygen that achieves roughly two orders of magnitude higher sensitivity for fully rotationally resolved spectra than the current state of the art. Two-color (2 + 1′) resonance-enhanced multiphoton ionization (REMPI) via the 3d Rydberg complex yields state-selective spectra with signal comparable to the intense but diffuse C 3sσ 3Πg ← X 3Σg- (2 + 1) REMPI bands without significant saturation or broadening. The resulting increase in sensitivity permitted observation of the very weak 3dπ 1Δ2 ← X 3Σg- transitions and is independent of the intermediate state. This advance in ionization efficiency and quantum state-selective sensitivity for O2 promises to aid physical and chemical studies across a wide variety of fields.

AB - We report a new spectroscopic detection scheme for molecular oxygen that achieves roughly two orders of magnitude higher sensitivity for fully rotationally resolved spectra than the current state of the art. Two-color (2 + 1′) resonance-enhanced multiphoton ionization (REMPI) via the 3d Rydberg complex yields state-selective spectra with signal comparable to the intense but diffuse C 3sσ 3Πg ← X 3Σg- (2 + 1) REMPI bands without significant saturation or broadening. The resulting increase in sensitivity permitted observation of the very weak 3dπ 1Δ2 ← X 3Σg- transitions and is independent of the intermediate state. This advance in ionization efficiency and quantum state-selective sensitivity for O2 promises to aid physical and chemical studies across a wide variety of fields.

UR - http://www.scopus.com/inward/record.url?scp=85186386219&partnerID=8YFLogxK

U2 - 10.1021/acs.jpclett.4c00141

DO - 10.1021/acs.jpclett.4c00141

M3 - Article

C2 - 38421311

AN - SCOPUS:85186386219

SN - 1948-7185

VL - 15

SP - 2639

EP - 2642

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 9

ER -

Significantly Improved Detection of Molecular Oxygen by Two-Color Resonance-Enhanced Multiphoton Ionization

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this