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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

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

Constraints on changes in the proton-electron mass ratio using methanol lines

Kanekar, N., Ubachs, W. M. G., Menten, K. M., Bagdonaite, J., Brunthaler, A., Henkel, C., Muller, S., Bethlem, H. L. & Dapra, M., 2015, In : Monthly Notices of the Royal Astronomical Society: Letters. 448, 1, p. L104-L108

Research output: Contribution to JournalArticleAcademicpeer-review

Constraints on extra dimensions from precision molecular spectroscopy

Salumbides, E. J., Schellekens, A. N., Gato-Rivera, B. & Ubachs, W. M. G., 2015, In : New Journal of Physics. 17, p. 033015 033015.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Effect of soil temperature on optical frequency transfer through unidirectional dense-wavelength-division-multiplexing fiber-optic links

Pinkert, T. J., Boll, O., Willmann, L., Jansen, G. S. M., Dijck, E. A., Groeneveld, B. G. H. M., Smets, R., Bosveld, F. C., Ubachs, W. M. G., Jungmann, K., Eikema, K. S. E. & Koelemeij, J. C. J., 2015, In : Applied Optics. 54, 4, p. 728-738

Research output: Contribution to JournalArticleAcademicpeer-review

Gas-Phase Electronic Absorption Spectra of Deuterated Linear Seven-Carbon Radicals

Haddad, M. A., Zhao, D. & Ubachs, W. M. G., 2015, In : Spectroscopy Letters. 48, 8, p. 567-571

Research output: Contribution to JournalArticleAcademicpeer-review

H-2 Lyman and Werner band lines and their sensitivity for a variation of the proton-electron mass ratio in the gravitational potential of white dwarfs

Salumbides, E. J., Bagdonaite, J., Abgrall, H., Roueff, E. & Ubachs, W. M. G., 2015, In : Monthly Notices of the Royal Astronomical Society. 450, 2, p. 1237-1245

Research output: Contribution to JournalArticleAcademicpeer-review

High-precision laser spectroscopy of the CO A(1)Pi - X-1 Sigma(+) (2,0), (3,0), and (4,0) bands

Niu, M., Ramirez, F., Salumbides, E. J. & Ubachs, W. M. G., 2015, In : Journal of Chemical Physics. 142, 4, p. 044302 044302.

Research output: Contribution to JournalArticleAcademicpeer-review

Rayleigh-Brillouin Scattering in Binary-Gas Mixtures

Gu, Z., Ubachs, W. M. G., Marques, W. & van der Water, W., 2015, In : Physical Review Letters. 114, 24, p. 243902 243902.

Research output: Contribution to JournalArticleAcademicpeer-review

The B-2 Pi-X-2 Pi electronic origin band of (C6H)-C-13

Bacalla, X. L., Zhao, D., Salumbides, E. J., Haddad, M. A., Linnartz, H. V. J. & Ubachs, W. M. G., 2015, In : Journal of Molecular Spectroscopy. 308, p. 41-44

Research output: Contribution to JournalArticleAcademicpeer-review

The electronic spectra of long carbon-chain (C2nH)-C-(13)/D molecules for (n=4-6)

Haddad, M. A., Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2015, In : Molecular Physics. 113, 15-16 SI, p. 2063-2072

Research output: Contribution to JournalArticleAcademicpeer-review

The inhomogeneous ISM toward PKS 1830-211 SW: A detailed view of molecular gas at a look-back time of 7.5 Gyr

Schulz, A., Henkel, C., Menten, K. M., Muller, S., Muders, D., Bagdonaite, J. & Ubachs, W. M. G., 2015, In : Astronomy and Astrophysics. 574, p. A108 A108.

Research output: Contribution to JournalArticleAcademicpeer-review

VUV Fourier-Transform absorption study of the np pi (1)Pi(-)(u) nu,N <- X-1 Sigma(+)(g), nu ''=0,N '' transitions in D-2

Glass-Maujean, M., Jungen, C., Dickenson, G. D., Ubachs, W. M. G., de Oliveira, N. & Joyeux, D., 2015, In : Journal of Molecular Spectroscopy. 315, SI, p. 147-154

Research output: Contribution to JournalArticleAcademicpeer-review

VUV-synchrotron absorption studies of N-2 and CO at 900 K

Niu, M., Heays, A. N., Jones, S., Salumbides, E. J., van Dishoeck, E. F., de Oliveira, N., Nahon, L. & Ubachs, W. M. G., 2015, In : Journal of Molecular Spectroscopy. 315, SI, p. 137-146

Research output: Contribution to JournalArticleAcademicpeer-review

2014

ANALYSIS OF MOLECULAR HYDROGEN ABSORPTION TOWARD QSO B0642-5038 FOR A VARYING PROTON-TO-ELECTRON MASS RATIO

Bagdonaite, J., Ubachs, W. M. G., Murphy, M. T. & Whitmore, J. B., 2014, In : Astrophysical Journal. 782, 1, 10.

Research output: Contribution to JournalArticleAcademicpeer-review

Analysis of Rayleigh-Brillouin spectral profiles and Brillouin shifts in nitrogen gas and air

Ma, Y., Li, H., Gu, Z., Ubachs, W. M. G., Yu, Y., Huang, J., Zhou, B., Wang, Y. & Liang, K., 2014, In : Optics Express. 22, 2, p. 2092-2104

Research output: Contribution to JournalArticleAcademicpeer-review

A systematic study of Rayleigh-Brillouin scattering in air, N-2, and O-2 gases

Gu, Z. & Ubachs, W. M. G., 2014, In : Journal of Chemical Physics. 141, 10, 104320.

Research output: Contribution to JournalArticleAcademicpeer-review