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  • W.M.G. Ubachs
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

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

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

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

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, p. 1-11 11 p., 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

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

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

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

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

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

Open Access

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

Tests of fundamental physics using ramsey-comb spectroscopy on the hydrogen molecule

Roth, C., Dreissen, L. S., Grundeman, E. L., Krauth, J. J., Favier, M., Salumbides, E. J., Ubachs, W. & Eikema, K. S. E., 17 Oct 2019, 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019. Institute of Electrical and Electronics Engineers Inc., 8872740. (2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2019).

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

Tests of fundamental physics using Ramsey-comb spectroscopy on the hydrogen molecule

Roth, C., Dreissen, L. S., Gründeman, E. L., Krauth, J. J., Favier, M., Salumbides, E. J., Ubachs, W. & Eikema, K. S. E., 1 Jan 2019, European Quantum Electronics Conference, EQEC_2019. OSA - The Optical Society, 2019-ed_2_1. (Optics InfoBase Conference Papers; vol. Part F143-EQEC 2019).

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

The spin-forbidden vacuum-ultraviolet absorption spectrum of 14N15N

Heays, A. N., Lewis, B. R., De Oliveira, N. & Ubachs, W., 14 Dec 2019, In : Journal of Chemical Physics. 151, 22, p. 1-13 13 p., 224305.

Research output: Contribution to JournalArticleAcademicpeer-review

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

Cavitation-induced expansion dynamics of tin microdroplet target in EUV light sources

Kurilovich, D., Pinto, T., Schupp, R., Torretti, F., Scheers, J., Stodolna, A., Eikema, K. S., Witte, S., Ubachs, W., Hoekstra, R. & Versolato, O. O., Mar 2018, Compact EUV and X-ray Light Sources, EUVXRAY 2018. OSA - The Optical Society, Vol. Part F85-EUVXRAY 2018.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

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

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

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

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

Open Access

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., Jan 2018, Exploring the World with the Laser: Dedicated to Theodor Hänsch on his 75th Birthday. Cham: Springer International Publishing Switzerland, p. 267-307 41 p.

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Open Access

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

Physics of laser-produced plasma sources of extreme ultraviolet radiation

Versolato, O. O., Kurilovich, D., Torretti, F., Schupp, R., Scheers, J., Deuzeman, M. J., Bayerle, A., Hoekstra, R. & Ubachs, W., 1 Jan 2018, Compact EUV and X-ray Light Sources, EUVXRAY 2018. OSA - The Optical Society, Vol. Part F85-EUVXRAY 2018.

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review

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., 012709.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

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

Trivikram, T. M., Niu, M. L., Wcisło, P., Ubachs, W. & Salumbides, E. J., Jan 2018, Exploring the World with the Laser: Dedicated to Theodor Hänsch on his 75th Birthday. Cham: Springer International Publishing Switzerland, p. 679-700 22 p.

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Open Access

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

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

Search for Varying Constants of Nature from Astronomical Observation of Molecules

Ubachs, W., Feb 2018, In : Space Science Reviews. 214, 1, p. 1-15 15 p., 3.

Research output: Contribution to JournalReview articleAcademicpeer-review

Open Access

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, 045005.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

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

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

A testing time for antimatter

Ubachs, W., 4 Nov 2016, In : Science. 354, 6312, p. 546-547 2 p.

Research output: Contribution to JournalShort surveyAcademicpeer-review

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

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

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

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

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

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

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

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

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

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

The excited J=0 (1)Sigma(+)(u) levels of D-2: Measurements and ab initio quantum defect study

Glass-Maujean, M., Jungen, C., Dickenson, G. D., de Oliveira, N. & Ubachs, W. M. G., 2016, In : Journal of Molecular Spectroscopy. 320, p. 33-38

Research output: Contribution to JournalArticleAcademicpeer-review

The Measurement of Tropospheric Temperature Profiles using Rayleigh-Brillouin Scattering: Results from Laboratory and Atmospheric Studies

Witschas, B., Reitebuch, O., Lemmerz, C., Kableka, P. G., Kondratyev, S., Gu, Z. & Ubachs, W., 7 Jun 2016, In : EPJ Web of Conferences. 119, 27004.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

VIS and VUV spectroscopy of (CO)-C-12-O-17 and deperturbation analysis of the A(1)II, nu=1-5 levels

Hakalla, R., Niu, M., Field, R. W., Salumbides, E. J., Heays, A. N., Stark, G., Lyons, J. R., Eidelsberg, M., Lemaire, J. L., Federman, S., Zachwieja, M., Szajna, W., Kolek, P., Piotrowska, I., Ostrowska-Kopec, M., Kepa, R., de Oliveira, N. & Ubachs, W. M. G., 2016, In : RSC Advances. 6, 38, p. 31588-31606

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
2015

Communication: Test of quantum chemistry in vibrationally hot hydrogen molecules

Niu, M., Salumbides, E. J. & Ubachs, W. M. G., 2015, In : Journal of Chemical Physics. 143, 8, p. 081102 081102.

Research output: Contribution to JournalArticleAcademicpeer-review

Constraint on a Varying Proton-Electron Mass Ratio 1.5 Billion Years after the Big Bang

Bagdonaite, J., Ubachs, W. M. G., Murphy, M. T. & Withmore, J. B., 2015, In : Physical Review Letters. 114, 7, p. 071301 071301.

Research output: Contribution to JournalArticleAcademicpeer-review