photon ionization
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scholarly journals Detecting Chirality in Mixtures Using Nanosecond Photoelectron Circular Dichroism

2022 ◽  
Author(s):  
Simon Ranecky ◽  
G. Barratt Park ◽  
Peter C Samartzis ◽  
Ioannis C. Giannakidis ◽  
Dirk Schwarzer ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
High Resolution ◽  
Gas Phase ◽  
Molecular Beams ◽  
Structural Isomers ◽  
Photon Ionization ◽  
Phase Mixture ◽  
Circular Dichroïsm

We report chirality detection of structural isomers in a gas phase mixture using nanosecond photoelectron circular dichroism (PECD). Combining pulsed molecular beams with high-resolution resonance enhanced multi-photon ionization (REMPI) allows...

scholarly journals Magnetic dichroism in few-photon ionization of polarized atoms

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
B. P. Acharya ◽  
M. Dodson ◽  
S. Dubey ◽  
K. L. Romans ◽  
A. H. N. C. De Silva ◽  
...  
Keyword(s):  
Magnetic Dichroism ◽  
Photon Ionization ◽  
Polarized Atoms

scholarly journals Assessment of Breathomics Testing Using High-Pressure Photon Ionization Time-of-Flight Mass Spectrometry to Detect Esophageal Cancer

2021 ◽  
Vol 4 (10) ◽  
pp. e2127042
Author(s):  
Qi Huang ◽  
Shaodong Wang ◽  
Qingyun Li ◽  
Peiyu Wang ◽  
Jianfeng Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Pressure ◽  
Esophageal Cancer ◽  
Time Of Flight ◽  
Ionization Time ◽  
Flight Mass Spectrometry ◽  
Photon Ionization

scholarly journals Three-Photon Ionization with One-Photon Resonance between Excited Levels

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 68
Author(s):  
Aleksandr Gomonai ◽  
Eugene Remeta ◽  
Anna Gomonai
Keyword(s):  
Laser Radiation ◽  
Density Matrix ◽  
Matrix Method ◽  
Excited Level ◽  
Level Model ◽  
Photon Ionization ◽  
Photon Resonance ◽  
Ionization Spectrum

Within the framework of a three-level model, the process of three-photon ionization with one-photon resonance between two excited levels (with the lower one being initially unpopulated) is considered using the density matrix method. It is shown that such resonance can result in the appearance of a maximum in the three-photon ionization spectrum when detuning between the resonance wavenumber and the wavenumber of the transition responsible for the lower excited level being populated exceeds the laser radiation linewidth by more than three orders of magnitude.

Coherent microwave scattering from resonance enhanced multi-photon ionization (Radar REMPI): A review

2021 ◽  
Author(s):  
Zhili Zhang ◽  
Mikhail Shneider ◽  
Richard B. Miles
Keyword(s):  
Microwave Scattering ◽  
Photon Ionization

Insight to pyrolysis behavior of three aromatic ethers by pyrolysis coupled with single-photon ionization molecular-beam mass spectrometry

Fuel ◽  
2021 ◽  
Vol 298 ◽  
pp. 120821
Author(s):  
Fanggang Liu ◽  
He Yang ◽  
Lijun Jin ◽  
Yang Li ◽  
Zichao Tang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Beam ◽  
Single Photon ◽  
Single Photon Ionization ◽  
Molecular Beam Mass Spectrometry ◽  
Pyrolysis Behavior ◽  
Photon Ionization

scholarly journals 300-attosecond response of acetylene in two-photon ionization/dissociation processes

Optica ◽  
2021 ◽  
Author(s):  
Takuya Matsubara ◽  
Shinichi Fukahori ◽  
Erik Lotstedt ◽  
Yasuo Nabekawa ◽  
Kaoru Yamanouchi ◽  
...  
Keyword(s):  
Two Photon ◽  
Photon Ionization

scholarly journals Linear dichroism in few-photon ionization of laser-dressed helium

2021 ◽  
Vol 75 (7) ◽  
Author(s):  
Severin Meister ◽  
Aaron Bondy ◽  
Kirsten Schnorr ◽  
Sven Augustin ◽  
Hannes Lindenblatt ◽  
...  
Keyword(s):  
Excited States ◽  
Extreme Ultraviolet ◽  
Linear Dichroism ◽  
Binding Energies ◽  
Angular Distributions ◽  
Ir Radiation ◽  
Relative Polarization ◽  
Photon Excitation ◽  
Photon Ionization ◽  
Photoelectron Angular Distributions

Abstract Ionization of laser-dressed atomic helium is investigated with focus on photoelectron angular distributions stemming from two-color multi-photon excited states. The experiment combines extreme ultraviolet (XUV) with infrared (IR) radiation, while the relative polarization and the temporal delay between the pulses can be varied. By means of an XUV photon energy scan over several electronvolts, we get access to excited states in the dressed atom exhibiting various binding energies, angular momenta, and magnetic quantum numbers. Furthermore, varying the relative polarization is employed as a handle to switch on and off the population of certain states that are only accessible by two-photon excitation. In this way, photoemission can be suppressed for specific XUV photon energies. Additionally, we investigate the dependence of the photoelectron angular distributions on the IR laser intensity. At our higher IR intensities, we start leaving the simple multi-photon ionization regime. The interpretation of the experimental results is supported by numerically solving the time-dependent Schrödinger equation in a single-active-electron approximation. Graphic abstract

scholarly journals SPECTROSCOPIC STUDIES OF TRANSITION METAL AND LANTHANIDE BORIDES WITH RESONANT TWO-PHOTON IONIZATION SPECTROSCOPY

2021 ◽  
Author(s):  
Dakota Merriles ◽  
Michael Morse ◽  
Erick Tieu ◽  
Christopher Nielson ◽  
Kimberly Tomchak
Keyword(s):  
Transition Metal ◽  
Spectroscopic Studies ◽  
Two Photon ◽  
Photon Ionization
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