Publisher’s Note: “A recoil ion momentum spectrometer for probing ionization, e-capture, and capture-ionization induced molecular fragmentation dynamics” [Rev. Sci. Instrum. 92, 123304 (2021)]

The ionization and fragmentation dynamics of iodine molecules (I2) are traced using very intense (∼1014 W cm−2) ultra-short (∼60 fs) light pulses with 87 eV photons of the Free-electron LASer at Hamburg (FLASH) in combination with a synchronized femtosecond optical laser. Within a pump–probe scheme the IR pulse initiates a molecular fragmentation and then, after an adjustable time delay, the system is exposed to an intense FEL pulse. This way we follow the creation of highly-charged molecular fragments as a function of time, and probe the dynamics of multi-photon absorption during the transition from a molecule to individual atoms.

Download Full-text

Momentum imaging spectrometer for molecular fragmentation dynamics induced by pulsed electron beam

Review of Scientific Instruments ◽

10.1063/1.4847156 ◽

2013 ◽

Vol 84 (12) ◽

pp. 123110 ◽

Cited By ~ 16

Author(s):

EnLiang Wang ◽

Xu Shan ◽

YuFeng Shi ◽

YaGuo Tang ◽

XiangJun Chen

Keyword(s):

Electron Beam ◽

Imaging Spectrometer ◽

Pulsed Electron Beam ◽

Molecular Fragmentation ◽

Fragmentation Dynamics ◽

Momentum Imaging

Download Full-text

An interpretation of molecular fragmentation dynamics in terms of the resonance spectrum

The Journal of Chemical Physics ◽

10.1063/1.458665 ◽

1990 ◽

Vol 93 (7) ◽

pp. 4750-4760 ◽

Cited By ~ 9

Author(s):

G. Jolicard ◽

O. Atabek

Keyword(s):

Resonance Spectrum ◽

Molecular Fragmentation ◽

Fragmentation Dynamics

Download Full-text

Austerity and fragmentation: Dynamics of Europeanization of media discourses in Greece and Italy

Communications ◽

10.1515/commun-2020-2090 ◽

2020 ◽

Vol 45 (s1) ◽

pp. 864-892

Author(s):

Cristiano Bee ◽

Stavroula Chrona

Keyword(s):

Financial Crisis ◽

Qualitative Analysis ◽

National Level ◽

Emergency Situation ◽

Media Representations ◽

Euro Crisis ◽

Public Spheres ◽

Fragmentation Dynamics ◽

Communication Practices ◽

Media Discourses

AbstractThis article investigates media representations of the European financial crisis in Greece and Italy. We study the Euro crisis as an ‘emergency situation’ with domino effects, where media played a central role in shaping communication practices at the national level as well as between the two countries. Drawing upon vertical and horizontal dynamics of Europeanization, we map the convergences and divergences in media discourses that surround the period 2011–2015. In doing so, we elaborate a qualitative analysis of newspaper articles focusing, in particular, on the themes of austerity and the fragmentation of Europe. Our argument suggests that national public spheres in times of transnational crisis become increasingly nationalized; yet under certain circumstances such as when the supranational infrastructure is the target of blame, they converge, opening the path toward a transnational discursive dialogue.

Download Full-text

Unusual hydroxyl migration in the fragmentation of β-alanine dication in the gas phase

Physical Chemistry Chemical Physics ◽

10.1039/c5cp01628b ◽

2015 ◽

Vol 17 (26) ◽

pp. 16767-16778 ◽

Cited By ~ 11

Author(s):

Dariusz Grzegorz Piekarski ◽

Rudy Delaunay ◽

Sylvain Maclot ◽

Lamri Adoui ◽

Fernando Martín ◽

...

Keyword(s):

Gas Phase ◽

Theoretical Investigations ◽

Fragmentation Dynamics

Experimental and theoretical investigations show that hydroxyl migration leads to unexpected fragmentation dynamics of β-alanine dication in the gas phase.

Download Full-text

Low-Fluence Laser Induced Fragmentation and Desorption of 3,4,9,10-Perylenetetracarboxylic Dianhydride (PTCDA) Thin Film

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.543.30 ◽

2013 ◽

Vol 543 ◽

pp. 30-34 ◽

Cited By ~ 2

Author(s):

Aljona Ramonova ◽

Tengiz Butkhuzi ◽

Viktorija Abaeva ◽

I.V. Tvauri ◽

Soslan Khubezhov ◽

...

Keyword(s):

Thin Film ◽

Carbon Dioxide ◽

Carbon Monoxide ◽

Kinetic Energy ◽

Atomic Oxygen ◽

Laser Light ◽

Pulsed Laser ◽

Molecular Fragmentation ◽

Irradiation Pulse ◽

Main Effect

Laser-induced fragmentation and desorption of fragments of PTCDA films vacuum-deposited on GaAs (100) substrate has been studied by time-of-flight (TOF) mass spectroscopy. The main effect caused by pulsed laser light irradiation (pulse duration: 10 ns, photon energy: 2.34 eV and laser fluence ranging from 0.5 to 7 mJ/cm2) is PTCDA molecular fragmentation and desorption of the fragments formed, whereas no desorption of intact PTCDA molecule was detected. Fragments formed are perylene core C20H8, its half C10H4, carbon dioxide, carbon monoxide and atomic oxygen. All desorbing fragments have essentially different kinetic energy. The mechanism of photoinduced molecular fragmentation and desorption is discussed.

Download Full-text