Note: Knife edge skimming for improved separation of molecular species by the deflector

Trippel, Sebastian; Johny, Melby; Kierspel, Thomas; Bieker, Helen; Ye, Hong; Mullins, Terry; Gumprecht, Lars; Długołȩcki, Karol; Küpper, Jochen

doi:10.1063/1.5026145

Cited by 18 publications

(28 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…24 We note that this device is ideally suited for quantum-state selection and the preparation of structurally pure samples, even of complex molecules. [24][25][26] Here, the deflection provided the sample of OCS molecules in their rotational ground-state. 27,28 Photoelectrons from strong-field ionization (SFI) by the 2 µm laser pulses were accelerated into a 10 cm long fieldfree flight tube before being detected on a 77 mm diameter dual microchannel-plate/phosphor-screen assembly.…”

Section: Methodsmentioning

confidence: 99%

Atomic-resolution imaging of carbonyl sulfide by laser-induced electron diffraction

Karamatskos

Goldsztejn

Raabe

et al. 2019

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

Measurements on the strong-field ionization of carbonyl sulfide molecules by short, intense, 2 µm wavelength laser pulses are presented from experiments where angle-resolved photoelectron distributions were recorded with a high-energy velocity map imaging spectrometer, designed to reach a maximum kinetic energy of 500 eV. The laser-field-free elastic-scattering cross section of carbonyl sulfide was extracted from the measurements and is found in good agreement with previous experiments, performed using conventional electron diffraction. By comparing our measurements to the results of calculations, based on the quantitative rescattering theory (QRS), the bond lengths and molecular geometry were extracted from the experimental differential cross sections to a precision better than ±5 pm and in agreement with the known values.

show abstract

Section: Methodsmentioning

confidence: 99%

Atomic-resolution imaging of carbonyl sulfide by laser-induced electron diffraction

Karamatskos

Goldsztejn

Raabe

et al. 2019

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here, the electrostatic deflector was used to spatially separate water dimers from water monomers as well as larger water-clusters in a molecular beam formed by supersonic expansion. The experimental setup was described previously [26,39]. Briefly, liquid water was placed in the reservoir of an Even-Lavie valve [23], heated to 55 • C, seeded in 100 bar of helium, and expanded into vacuum with a nominal driving-pulse duration of 19.5 µs and at a repetition rate of 250 Hz.…”

Section: Experimental Methodsmentioning

confidence: 99%

Pure Molecular Beam of Water Dimer

Bieker

Johny

et al. 2019

J. Phys. Chem. A

Self Cite

View full text Add to dashboard Cite

Spatial separation of water dimers from water monomers and larger water-clusters through the electric deflector is presented. A beam of water dimers with 93 % purity and a rotational temperature of 1.5 K was obtained. Following strong-field ionization using a 35 fs laser pulse with a wavelength centered around 800 nm and a peak intensity of 10 14 W/cm 2 we observed proton transfer and 46 % of ionized water dimers broke apart into hydronium ions H3O + and neutral OH. arXiv:1904.08716v3 [physics.atm-clus]

show abstract

“…2 (b)). The color scale is the same as in background can be strongly reduced using the electric deflector, 34,35 this approach was not used here in favour of a shorter length of the molecular beam path and the correspondingly larger signal strength. The expected diffraction pattern, i. e., the sum of Fig.…”

Section: Simulationsmentioning

confidence: 99%

X-ray diffractive imaging of controlled gas-phase molecules: Toward imaging of dynamics in the molecular frame

Kierspel

Morgan

Wiese

et al. 2020

The Journal of Chemical Physics

Self Cite

View full text Add to dashboard Cite

We report experimental results on the diffractive imaging of three-dimensionally aligned 2,5-diiodothiophene molecules. The molecules were aligned by chirped near-infrared laser pulses, and their structure was probed at a photon energy of 9.5 keV (λ ≈ 130 pm) provided by the Linac Coherent Light Source. Diffracted photons were recorded on the CSPAD detector and a two-dimensional diffraction pattern of the equilibrium structure of 2,5-diiodothiophene was recorded. The retrieved distance between the two iodine atoms agrees with the quantum-chemically calculated molecular structure to within 5 %. The experimental approach allows for the imaging of intrinsic molecular dynamics in the molecular frame, albeit this requires more experimental data which should be readily available at upcoming high-repetition-rate facilities.

show abstract

Note: Knife edge skimming for improved separation of molecular species by the deflector

Cited by 18 publications

References 9 publications

Atomic-resolution imaging of carbonyl sulfide by laser-induced electron diffraction

Atomic-resolution imaging of carbonyl sulfide by laser-induced electron diffraction

Pure Molecular Beam of Water Dimer

X-ray diffractive imaging of controlled gas-phase molecules: Toward imaging of dynamics in the molecular frame

Contact Info

Product

Resources

About