If you made any changes in Pure these will be visible here soon.

Research Output 1983 2019

Filter
Article
2019

Benchmarking Theory with an Improved Measurement of the Ionization and Dissociation Energies of H2

Hölsch, N., Beyer, M., Salumbides, E. J., Eikema, K. S. E., Ubachs, W., Jungen, C. & Merkt, F., 15 Mar 2019, In : Physical Review Letters. 122, 10, p. 1-6 6 p., 103002.

Research output: Contribution to JournalArticleAcademicpeer-review

dissociation
ionization
intervals
protons
energy

Bulk viscosity of CO2 from Rayleigh-Brillouin light scattering spectroscopy at 532 nm

Wang, Y., Ubachs, W. & van de Water, W., 21 Apr 2019, In : Journal of Chemical Physics. 150, 15, p. 1-10 10 p., 154502.

Research output: Contribution to JournalArticleAcademicpeer-review

Brillouin scattering
Light scattering
light scattering
Spectroscopy
Viscosity

Cavity ring-down UV spectroscopy of the C 2 Σ + -X 2 Π electronic transition of CH

Medcraft, C., Linnartz, H. & Ubachs, W., Jun 2019, In : Journal of Molecular Spectroscopy. 360, p. 15-23 9 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Bond length
Hydrocarbons
Ultraviolet spectroscopy
Excited states
Spectroscopy

Determination of the Interval between the Ground States of Para- and Ortho- H2

Beyer, M., Hölsch, N., Hussels, J., Cheng, C. F., Salumbides, E. J., Eikema, K. S. E., Ubachs, W., Jungen, C. & Merkt, F., 16 Oct 2019, In : Physical Review Letters. 123, 16, p. 1-6 6 p., 163002.

Research output: Contribution to JournalArticleAcademicpeer-review

energy levels
intervals
ground state
nuclear spin
conservation

Efficient Generation of Extreme Ultraviolet Light From Nd:YAG-Driven Microdroplet-Tin Plasma

Schupp, R., Torretti, F., Meijer, R. A., Bayraktar, M., Scheers, J., Kurilovich, D., Bayerle, A., Eikema, K. S. E., Witte, S., Ubachs, W., Hoekstra, R. & Versolato, O. O., 8 Jul 2019, In : Physical Review Applied. 12, 1, 014010.

Research output: Contribution to JournalArticleAcademicpeer-review

Excitation of H2 at large internuclear separation: outer well states and continuum resonances

Trivikram, T. M., Salumbides, E. J., Jungen, C. & Ubachs, W., 2 Nov 2019, In : Molecular Physics. 117, 21, p. 2961-2971 11 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

H 2 /HD molecular data for analysis of quasar spectra in search of varying constants

Ubachs, W., Salumbides, E. J., Murphy, M. T., Abgrall, H. & Roueff, E., Feb 2019, In : Astronomy and Astrophysics. 622, p. 1-4 4 p., A127.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
quasars
electron mass
mass ratios
lists
electron

High accuracy theoretical investigations of CaF, SrF, and BaF and implications for laser-cooling

Hao, Y., Pašteka, L. F., Visscher, L., Aggarwal, P., Bethlem, H. L., Boeschoten, A., Borschevsky, A., Denis, M., Esajas, K., Hoekstra, S., Jungmann, K., Marshall, V. R., Meijknecht, T. B., Mooij, M. C., Timmermans, R. G. E., Touwen, A., Ubachs, W., Willmann, L., Yin, Y. & Zapara, A., 21 Jul 2019, In : Journal of Chemical Physics. 151, 3, p. 1-17 17 p., 034302.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Laser cooling
laser cooling
Dipole moment
Excited states
dipole moments

Lamb-dips and Lamb-peaks in the saturation spectrum of HD

Diouf, M. L., Cozijn, F. M. J., Darquié, B., Salumbides, E. J. & Ubachs, W., 1 Oct 2019, In : Optics Letters. 44, 19, p. 4733-4736 4 p.

Research output: Contribution to JournalArticleAcademicpeer-review

deuterides
saturation
hydrogen
substructures
line shape

Lifetime measurements of the A 2 Π1/2 and A 2 Π3/2 states in BaF

NL-eEDM Collaboration, 12 Nov 2019, In : Physical Review A. 100, 5, p. 1-5 5 p., 052503.

Research output: Contribution to JournalArticleAcademicpeer-review

barium
life (durability)
electric moments
laser induced fluorescence
electric dipoles

Precision spectroscopy and comprehensive analysis of perturbations in the A 1 ∏(v = 0) state of 13 C 18 O

Hakalla, R., Trivikram, T. M., Heays, A. N., Salumbides, E. J., de Oliveira, N., Field, R. W. & Ubachs, W., 2 Jan 2019, In : Molecular Physics. 117, 1, p. 79-96 18 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Synchrotrons
Fourier Analysis
Spectrum Analysis
Fourier transforms
Spectroscopy

Radiation transport and scaling of optical depth in Nd:YAG laser-produced microdroplet-tin plasma

Schupp, R., Torretti, F., Meijer, R. A., Bayraktar, M., Sheil, J., Scheers, J., Kurilovich, D., Bayerle, A., Schafgans, A. A., Purvis, M., Eikema, K. S. E., Witte, S., Ubachs, W., Hoekstra, R. & Versolato, O. O., 19 Sep 2019, In : Applied Physics Letters. 115, 12, p. 1-5 5 p., 124101.

Research output: Contribution to JournalArticleAcademicpeer-review

radiation transport
optical thickness
YAG lasers
tin
scaling

Rayleigh-Brillouin light scattering spectra of CO2 from molecular dynamics

Jamali, S. H., De Groen, M., Moultos, O. A., Hartkamp, R., Vlugt, T. J. H., Ubachs, W. & Van De Water, W., 14 Aug 2019, In : Journal of Chemical Physics. 151, 6, p. 1-8 8 p., 064201.

Research output: Contribution to JournalArticleAcademicpeer-review

Brillouin scattering
Light scattering
Molecular dynamics
light scattering
molecular dynamics
2018

Active Two-Dimensional Steering of Radiation from a Nanoaperture

Dreissen, L. S., Schouten, H. F., Ubachs, W., Raghunathan, S. B. & Visser, T. D., 14 Nov 2018, In : Nano Letters. 18, 11, p. 7207-7210 4 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Radiation
Wavelength
radiation
light modulators
Metals

Deep-Ultraviolet Frequency Metrology of H2 for Tests of Molecular Quantum Theory

Altmann, R. K., Dreissen, L. S., Salumbides, E. J., Ubachs, W. & Eikema, K. S. E., 25 Jan 2018, In : Physical Review Letters. 120, 4, 043204.

Research output: Contribution to JournalArticleAcademicpeer-review

quantum theory
metrology
hydrogen
quantum electrodynamics
laser spectroscopy

Dissociation Energy of the Hydrogen Molecule at 10-9 Accuracy

Cheng, C. F., Hussels, J., Niu, M., Bethlem, H. L., Eikema, K. S. E., Salumbides, E. J., Ubachs, W., Beyer, M., Hölsch, N., Agner, J. A., Merkt, F., Tao, L. G., Hu, S. M. & Jungen, C., 6 Jul 2018, In : Physical Review Letters. 121, 1, p. 1-5 5 p., 013001.

Research output: Contribution to JournalArticleAcademicpeer-review

dissociation
hydrogen
molecules
ionization
energy

Energy-level structure of Sn3+ ions

Scheers, J., Ryabtsev, A., Borschevsky, A., Berengut, J. C., Haris, K., Schupp, R., Kurilovich, D., Torretti, F., Bayerle, A., Eliav, E., Ubachs, W., Versolato, O. O. & Hoekstra, R., 4 Dec 2018, In : Physical Review A. 98, 6, p. 1-12 12 p., 062503.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
energy levels
ions
configurations
ultraviolet spectra
masking

Expansion Dynamics after Laser-Induced Cavitation in Liquid Tin Microdroplets

Kurilovich, D., Pinto, T. D. F., Torretti, F., Schupp, R., Scheers, J., Stodolna, A. S., Gelderblom, H., Eikema, K. S. E., Witte, S., Ubachs, W., Hoekstra, R. & Versolato, O. O., 2 Nov 2018, In : Physical Review Applied. 10, 5, p. 1-8 8 p., 054005.

Research output: Contribution to JournalArticleAcademicpeer-review

cavitation flow
tin
expansion
fluid dynamics
liquids

Measuring the electric dipole moment of the electron in BaF

Aggarwal, P., Bethlem, H. L., Borschevsky, A., Denis, M., Esajas, K., Haase, P. A. B., Hao, Y., Hoekstra, S., Jungmann, K., Meijknecht, T. B., Mooij, M. C., Timmermans, R. G. E., Ubachs, W., Willmann, L. & Zapara, A., 20 Nov 2018, In : European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics. 72, 11, 197.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Power-law scaling of plasma pressure on laser-ablated tin microdroplets

Kurilovich, D., Basko, M. M., Kim, D. A., Torretti, F., Schupp, R., Visschers, J. C., Scheers, J., Hoekstra, R., Ubachs, W. & Versolato, O. O., 19 Jan 2018, In : Physics of Plasmas. 25, 1, p. 012709 10 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
plasma pressure
scaling laws
tin
propulsion
lasers

Rayleigh–Brillouin light scattering spectroscopy of nitrous oxide (N2O)

Wang, Y., Liang, K., van de Water, W., Marques, W. & Ubachs, W., Feb 2018, In : Journal of Quantitative Spectroscopy and Radiative Transfer. 206, p. 63-69 7 p.

Research output: Contribution to JournalArticleAcademicpeer-review

nitrous oxides
Nitrous Oxide
Light scattering
light scattering
Spectroscopy

Relativistic and QED Effects in the Fundamental Vibration of T2

Madhu Trivikram, T., Schlösser, M., Ubachs, W. & Salumbides, E. J., 16 Apr 2018, In : Physical Review Letters. 120, 16, p. 1-5 5 p., 163002.

Research output: Contribution to JournalArticleAcademicpeer-review

relativistic effects
vibration
ground tests
molecules
tritium

Short-wavelength out-of-band EUV emission from Sn laser-produced plasma

Torretti, F., Schupp, R., Kurilovich, D., Bayerle, A., Scheers, J., Ubachs, W., Hoekstra, R. & Versolato, O., 25 Jan 2018, In : Journal of Physics B: Atomic and Molecular Physics. 51, 045005

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
laser plasmas
wavelengths
local thermodynamic equilibrium
configurations
electric dipoles

Sn ion energy distributions of ns- A nd ps-laser produced plasmas

Bayerle, A., Deuzeman, M. J., Van Der Heijden, S., Kurilovich, D., De Faria Pinto, T. D., Stodolna, A., Witte, S., Eikema, K. S. E., Ubachs, W., Hoekstra, R. & Versolato, O. O., 4 Apr 2018, In : Plasma sources science & technology. 27, 4, p. 1-9 8 p., 045001.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Sub-Doppler Frequency Metrology in HD for Tests of Fundamental Physics

Cozijn, F. M. J., Dupré, P., Salumbides, E. J., Eikema, K. S. E. & Ubachs, W., 13 Apr 2018, In : Physical Review Letters. 120, 15, p. 1-5 5 p., 153002.

Research output: Contribution to JournalArticleAcademicpeer-review

metrology
deuterides
molecular spectroscopy
atomic clocks
physics
2017

Analysis of carbon monoxide absorption at zabs ≃ 2.5 to constrain variation of the proton-to-electron mass ratio

Dapra, M., Noterdaeme, P., Vonk, M., Murphy, M. T. & Ubachs, W., 7 Feb 2017, In : Monthly Notices of the Royal Astronomical Society. 467, 4, p. 3848-3855

Research output: Contribution to JournalArticleAcademicpeer-review

electron mass
carbon monoxide
mass ratios
electron
protons

C-60(+) and the Diffuse Interstellar Bands: An Independent Laboratory Check

Spieler, S., Kuhn, M., Postler, J., Simpson, M., Wester, R., Scheier, P., Ubachs, W., Bacalla, X., Bouwman, J. & Linnartz, H., 10 Sep 2017, In : Astrophysical Journal. 846, 2

Research output: Contribution to JournalArticleAcademicpeer-review

CARS spectroscopy of the (v=0→1) band in T2

Schlösser, M., Zhao, X., Trivikram, M., Ubachs, W. & Salumbides, E. J., Sep 2017, In : Journal of Physics B: Atomic, Molecular and Optical Physics. 50, 21, 214004.

Research output: Contribution to JournalArticleAcademicpeer-review

spectroscopy
high resolution
Raman spectroscopy
hydrogen
electronics

Constraint on a varying proton-to-electron mass ratio from H2 and HD absorption at zabs ≃ 2.34

Daprà, M., Laan, M., Murphy, M. T. & Ubachs, W., 2017, In : Monthly Notices of the Royal Astronomical Society. 465, 4, p. 4057-4073 17 p.

Research output: Contribution to JournalArticleAcademicpeer-review

electron mass
mass ratios
hydrogen
electron
protons

Discovery of a Perseus-like cloud in the early Universe: H I-to-H 2 transition, carbon monoxide and small dust grains at z abs ≈ 2.53 towards the quasar J0000+0048

Noterdaeme, P., Krogager, J. K., Balashev, S., Ge, J., Gupta, N., Krühler, T., Ledoux, C., Murphy, M. T., Pâris, I., Petitjean, P., Rahmani, H., Srianand, R. & Ubachs, W., 1 Jan 2017, In : Astronomy and Astrophysics. 597, A82.

Research output: Contribution to JournalArticleAcademicpeer-review

carbon monoxide
quasars
cold gas
universe
dust

Experimental and theoretical studies of the nps 1Su+ and nppi 1Pu+ (n >= 4, N'=1-6) states of D2: energies, natural widths, absorption line intensities, and dynamics

Glass-Maujean, M., Jungen, C., Vasserot, A. M., Schmoranzer, H., Knie, A., Kübler, S., Ehresmann, A. & Ubachs, W., 23 May 2017, In : Journal of Molecular Spectroscopy. 338, p. 22-71

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Defects
Ionization
Fourier transforms
defects
Fluorescence

Fourier-transform spectroscopy of 13C17O and deperturbation analysis of the A1Π (υ=0–3) levels

Hakalla, R., Niu, M. L., Field, R. W., Heays, A. N., Salumbides, E. J., Stark, G., Lyons, J. R., Eidelsberg, M., Lemaire, J. L., Federman, S. R., de Oliveira, N. & Ubachs, W., 1 Mar 2017, In : Journal of Quantitative Spectroscopy and Radiative Transfer. 189, p. 312-328 17 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Spectrometers
Fourier transforms
Orbits
Spectroscopy
Synchrotrons

High-precision spectroscopy of the HD+ molecule at the 1-p.p.b. level

Biesheuvel, J., Karr, J. P., Hilico, L., Eikema, K. S. E., Ubachs, W. & Koelemeij, J. C. J., 1 Jan 2017, In : Applied Physics B. Lasers and Optics. 123, 1, 23.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
molecular theory
Spectroscopy
deviation
Molecules
frequency measurement

Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target

Deuzeman, M. J., Stodolna, A. S., Leerssen, E. E. B., Antoncecchi, A., Spook, N., Kleijntjens, T., Versluis, J., Witte, S., Eikema, K. S. E., Ubachs, W., Hoekstra, R. & Versolato, O. O., 14 Mar 2017, In : Journal of Applied Physics. 121, 10, 103301.

Research output: Contribution to JournalArticleAcademicpeer-review

depth measurement
ion distribution
ablation
tin
fluence

Optical spectroscopy of complex open 4d-shell ions Sn7+ - Sn10+

Torretti, F., Windberger, R. A. W., Ryabtsev, A., Dobrodey, S., Bekker, H., Ubachs, W., Hoekstra, R., Kahl, E. V., Berengut, J. C., Crespo López-Urrutia, J. R. & Versolato, O., 10 Apr 2017, In : Physical Review A. 95, 042503.

Research output: Contribution to JournalArticleAcademicpeer-review

spectroscopy
ions
ultraviolet spectra
magnetic dipoles
configuration interaction

Perturbations in the A1Π, v = 0 state of 12C18O investigated via complementary spectroscopic techniques

Trivikram, M., Hakalla, R., Heays, A. N., Niu, M., Scheidegger, S., Salumbides, E. J., de Oliveira, N., Field, R. W. & Ubachs, W., 4 Aug 2017, In : Molecular Physics. 115, 24, p. 3178-3191

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Fourier Analysis
Spectrum Analysis
Fourier transforms
Hamiltonians
perturbation

Probing the Gravitational Dependence of the Fine-Structure Constant from Observations of White Dwarf Stars

Bainbridge, M. B., Barstow, M. A., Reindl, N., Tchang-Brillet, W. -U. L., Ayres, T. R., Webb, J. K., Barrow, J. D., Hu, J., Holberg, J. B., Preval, S. P., Ubachs, W., Dzuba, V. A., Flambaum, V. V., Dumont, V. & Berengut, J. C., Jun 2017, In : UNIVERSE. 3, 2

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Rayleigh-Brillouin scattering in SF6 in the kinetic regime

Wang, Y., Yu, Y., Liang, K., Marques, W., van de Water, W. & Ubachs, W., 1 Feb 2017, In : Chemical Physics Letters. 669, p. 137-142 6 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Brillouin scattering
Rayleigh scattering
Kinetics
kinetics
scattering

Testing the variability of the proton-to-electron mass ratio from observations of methanol in the dark cloud core L1498

Dapra, M., Henkel, C., Levshakov, S. A., Menten, K. M., Muller, S., Bethlem, H. L., Leurini, S., Lapinov, A. V. & Ubachs, W., Dec 2017, In : Monthly Notices of the Royal Astronomical Society. 472, 4, p. 4434-4443

Research output: Contribution to JournalArticleAcademicpeer-review

2016

Analysis of the fine structure of Sn11+-Sn14+ ions by optical spectroscopy in an electron-beam ion trap

Windberger, A., Torretti, F., Borschevsky, A., Ryabtsev, A., Dobrodey, S., Bekker, H., Eliav, E., Kaldor, U., Ubachs, W. M. G., Hoekstra, R., Lopez-Urrutia, J. R. C. & Versolato, O. O., 2016, In : Physical Review A. 94, 1, 012506.

Research output: Contribution to JournalArticleAcademicpeer-review

fine structure
electron beams
magnetic dipoles
spectroscopy
light sources

Colloquium: Search for a drifting proton-electron mass ratio from H-2

Ubachs, W. M. G., Bagdonaite, J., Salumbides, E. J., Murphy, M. T. & Kaper, L., 2016, In : Reviews of Modern Physics. 88, 2, 021003.

Research output: Contribution to JournalArticleAcademicpeer-review

electron mass
mass ratios
protons
quasars
echelle gratings

constraint on a cosmological variation in the proton-to-electron mass ratio from electronic co absorption

Dapra, M., Niu, M., Salumbides, E. J., Murphy, M. T. & Ubachs, W. M. G., 2016, In : Astrophysical Journal. 826, 2, 192.

Research output: Contribution to JournalArticleAcademicpeer-review

electron mass
carbon monoxide
mass ratios
absorbers
electron

Molecular Fountain

Cheng, C., van der Poel, A. P. P., Jansen, P., Quintero Perez, M., Wall, T. E., Ubachs, W. M. G. & Bethlem, H. L., 2016, In : Physical Review Letters. 117, 25, 5 p., 253201.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File
free fall
molecules
magnetic lenses
bunching
interrogation

Physics beyond the Standard Model from hydrogen spectroscopy

Ubachs, W. M. G., Koelemeij, J. C. J., Eikema, K. S. E. & Salumbides, E. J., 2016, In : Journal of Molecular Spectroscopy. 320, p. 1-12

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Absorption spectra
Hydrogen
Physics
Spectroscopy
absorption spectra

Plasma Propulsion of a Metallic Microdroplet and its Deformation upon Laser Impact

Kurilovich, D., Klein, A. L., Torretti, F., Lassise, A., Hoekstra, R., Ubachs, W. M. G., Gelderblom, H. & Versolato, O., 2016, In : Physical Review Applied. 6, 1, 014018.

Research output: Contribution to JournalArticleAcademicpeer-review

plasma propulsion
propulsion
lasers
physics
fluid dynamics

Precision measurements and test of molecular theory in highly excited vibrational states of H2 (v = 11)

Trivikram, T. M., Niu, M. L., Wcisło, P., Ubachs, W. & Salumbides, E. J., 1 Dec 2016, In : Applied Physics B. Lasers and Optics. 122, 12, 294.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
molecular theory
vibrational states
Electron energy levels
Rydberg states
Photodissociation

Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD

Biesheuvel, J., Karr, J-P., Hilico, L., Eikema, K. S. E., Ubachs, W. M. G. & Koelemeij, J. C. J., 2016, In : Nature Communications. 7, 10385.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Laser spectroscopy
hydrogen ions
molecular ions
laser spectroscopy
Protons

Spectroscopic Survey of Electronic Transitions of C6H, (C6H)-C-13, and C6D

Bacalla, X. L., Salumbides, E. J., Linnartz, H. V. J., Ubachs, W. M. G. & Zhao, D., 2016, In : Journal of Physical Chemistry A. 120, 32, p. 6402-6417

Research output: Contribution to JournalArticleAcademicpeer-review

electronic spectra
electronics

Spectroscopy and perturbation analysis of the A1π (v=0) state of 13 C16 O

Niu, M. L., Hakalla, R., Trivikram, T. M., Heays, A. N., de Oliveira, N., Salumbides, E. J. & Ubachs, W., 1 Oct 2016, In : Molecular Physics. 114, 19, p. 2857-2867 11 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
Spectrum Analysis
Spectroscopy
Fourier Analysis
perturbation
Temperature

Spectroscopy and perturbation analysis of the CO A(1)pi -X-1 sigma(+) (2,0), (3,0) and (4,0) bands

Niu, M., Salumbides, E. J., Heays, A. N., de Oliveira, N., Field, R. W. & Ubachs, W. M. G., 2016, In : Molecular Physics. 114, 5, p. 627-636

Research output: Contribution to JournalArticleAcademicpeer-review

Carbon Monoxide
Spectrum Analysis
Spectroscopy
perturbation
spectroscopy