Journal Article

PUBDB-2020-01627

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Observation of electric-quadrupole infrared transitions in water vapor

Campargue, A. (Corresponding author) ; Kassi, S. ; Yachmenev, A.CFEL*DESY* ; Kyuberis, A. A. ; Küpper, J.CFEL*DESY* ; Yurchenko, S. N.

2020
APS College Park, MD

This record in other databases:      

Please use a persistent id in citations: doi:10.1103/PhysRevResearch.2.023091  doi:10.3204/PUBDB-2020-01627

Abstract: Molecular absorption of infrared radiation is generally due to rovibrational electric-dipole transitions. Electric-quadrupole transitions may still occur, but they are typically a million times weaker than electric-dipoletransitions, rendering their observation extremely challenging. In polyatomic or polar diatomic molecules,rovibrational quadrupole transitions have never been observed. Here, we report the direct detection of quadrupoletransitions in water vapor. The detected quadrupole lines have intensity largely above the standard dipoleintensity cutoff of spectroscopic databases and thus are important for accurate atmospheric and astronomicalremote sensing.

---

Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)
2. CFEL-CMI (FS-CFEL-CMI)
3. beauftragt von UNI (UNI/CUI)
4. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621) (POF3-621)
2. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)
4. DFG project 281310165 - Abbildung chemischer Dynamik mittels laserinduzierter Elektronenbeugung im Molekülkoordinatensystem (281310165) (281310165)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2020

---

Database coverage:
;

---