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  • W.M.G. Ubachs
Article

Rayleigh-Brillouin scattering profiles of air at different temperatures and pressures

Gu, Z., Witschas, B., van der Water, W. & Ubachs, W. M. G., 2013, In : Applied Optics. 52, 19, p. 4640-51

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

Robust Constraint on a Drifting Proton-to-Electron Mass Ratio at z=0: 89 from Methanol Observation at Three Radio Telescopes

Bagdonaite, J., Dapra, M., Jansen, P., Bethlem, H. L., Ubachs, W. M. G., Muller, S., Henkel, C. & Menten, K. M., 2013, In : Physical Review Letters. 111, 23, 231101.

Research output: Contribution to JournalArticleAcademicpeer-review

Rotationally resolved spectra of the 4051 angstrom comet band of C-3 for all six C-12 and C-13 isotopologues

Haddad, M. A., Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2014, In : Journal of Molecular Spectroscopy. 297, p. 41-50

Research output: Contribution to JournalArticleAcademicpeer-review

Sensitivity of rotational transitions in CH and CD to a possible variation of fundamental constants

de Nijs, A. J., Ubachs, W. M. G. & Bethlem, H. L., 2012, In : Physical Review A. 86, 3

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio

Jansen, P., Kleiner, I., Xu, L-H., Ubachs, W. M. G. & Bethlem, H. L., 2011, In : Physical Review A. 84, 6, 06250584.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Sensitivity to a possible variation of the proton-to-electron mass ratio torsion-wagging-rotation transitions in methylamine CH3NH2

Ilyushin, V. V., Jansen, P., Kozlov, M. G., Levshakov, S. G., Kleiner, I., Ubachs, W. M. G. & Bethlem, H. L., 2012, In : Physical Review A. 85, 3, 032505.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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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, Molecular and Optical 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

Spectral characterization of an industrial EUV light source for nanolithography

Torretti, F., Liu, F., Bayraktar, M., Scheers, J., Bouza, Z., Ubachs, W., Hoekstra, R. & Versolato, O., 1 Jan 2020, In : Journal of Physics D. Applied Physics. 53, 5, p. 1-7 7 p., 055204.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Spectral identification of diffuse resonances in H2 above the n=2 dissociation limit

Ivanov, T. I., de Lange, C. A. & Ubachs, W. M. G., 2011, In : Journal of Chemical Physics. 134, p. 054309 10 p.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
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Spectroscopic investigations of YAG-laser-driven microdroplet-tin plasma sources of extreme ultraviolet radiation for nanolithography

Versolato, O., Bayerle, A., Bayraktar, M., Behnke, L., Bekker, H., Bouza, Z., Colgan, J., Crespo López-Urrutia, J. R., Deuzeman, M. J., Hoekstra, R., Kurilovich, D., Liu, B., Meijer, R., Neukirch, A., Poirier, L., Rai, S., Ryabtsev, A., Scheers, J., Schupp, R., Sheil, J. & 3 others, Torretti, F., Ubachs, W. & Witte, S., 11 Jun 2020, In : Journal of Physics: Conference Series. 1412, 19, p. 1-1 1 p., 192006.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Spectroscopic-network-assisted precision spectroscopy and its application to water

Tóbiás, R., Furtenbacher, T., Simkó, I., Császár, A. G., Diouf, M. L., Cozijn, F. M. J., Staa, J. M. A., Salumbides, E. J. & Ubachs, W., 6 Apr 2020, In : Nature Communications. 11, 1, p. 12 1 p., 1708.

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

Spin-orbit Splitting and Lifetime Broadening in the A(2)Delta Electronic State of l-C5H

Haddad, M. A., Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2012, In : Chinese Journal of Chemical Physics. 25, 2, p. 129-134

Research output: Contribution to JournalArticleAcademicpeer-review

Structure determination of the non-linear hydrocarbon chains C9H3 and C11H3 by deuterium labeling

Zhao, D., Haddad, M. A., Linnartz, H. V. J. & Ubachs, W. M. G., 2011, In : Journal of Chemical Physics. 135, p. 074201 074201.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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

Temperature-dependent bulk viscosity of nitrogen gas determined from spontaneous Rayleigh-Brillouin scattering

Gu, Z. & Ubachs, W. M. G., 2013, In : Optics Letters. 38, 7, p. 1110-2

Research output: Contribution to JournalArticleAcademicpeer-review

Temperature retrieval from Rayleigh-Brillouin scattering profiles measured in air

Witschas, B. & Ubachs, W. M. G., 2014, In : Optics Express. 22, 24, p. 29655-29667

Research output: Contribution to JournalArticleAcademicpeer-review

Testing the mass-scaling relations in the a3P state of 12C18O and 13C16O

de Nijs, A. J., Zhao, D., Bethlem, H. L., Linnartz, H. V. J. & Ubachs, W. M. G., 2013, In : Journal of Molecular Spectroscopy. 292, p. 20-22

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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 10 p.

Research output: Contribution to JournalArticleAcademicpeer-review

The 4051 Å comet band of 13C3

Haddad, M. A., Zhao, D., Linnartz, H. & Ubachs, W., Feb 2014, In : Proceedings of the International Astronomical Union. 9, S297, p. 297-299 3 p.

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 D-1 Pi(u) state of HD and the mass scaling relation of its predissociation widths

Dickenson, G. D. & Ubachs, W. M. G., 2012, In : Journal of Physics B: Atomic, Molecular and Optical Physics. 45, 14

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 electronic spectrum of the Cs-C11H3 radical

Zhao, D., Linnartz, H. V. J. & Ubachs, W. M. G., 2012, In : Journal of Chemical Physics. 136, 5, p. 054307

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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 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

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

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

Time- and space-resolved optical Stark spectroscopy in the afterglow of laser-produced tin-droplet plasma

Scheers, J., Schupp, R., Meijer, R., Ubachs, W., Hoekstra, R. & Versolato, O. O., Jul 2020, In : Physical review. E. 102, 1, p. 1-9 9 p., 013204.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access

Towards measuring the ionisation and dissociation energies of molecular hydrogen with sub-MHz accuracy

Sprecher, D., Jungen, C., Ubachs, W. M. G. & Merkt, F., 2011, In : Faraday Discussions. 150, p. 51-70

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

Two-photon Doppler-free ultraviolet laser spectroscopy on sulphur atoms

Lai, K. F., Salumbides, E. J. & Ubachs, W., 14 Sep 2020, In : Journal of Physics B: Atomic, Molecular and Optical Physics. 53, 17, p. 1-5 5 p., 175002.

Research output: Contribution to JournalArticleAcademicpeer-review

UV frequency metrology on CO (a3P); Isotope effects and sensitivity to a variation of the proton-to-elelctron mass ratio

de Nijs, A. J., Salumbides, E. J., Eikema, K. S. E., Ubachs, W. M. G. & Bethlem, H. L., 2011, In : Physical Review A. 84, 12 p., 052509.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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

VUV Fourier-transform absorption study of the Lyman and Werner bands in D-2

de Lange, A., Dickenson, G. D., Salumbides, E. J., Ubachs, W. M. G., de Oliveira, N., Joyeux, D. & Nahon, L., 2012, In : Journal of Chemical Physics. 136, 23

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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 spectroscopic study of the B '' (B)over-bar(1) Sigma(+)(u) state of H-2

Dickenson, G. D. & Ubachs, W. M. G., 2014, In : Molecular Physics. 112, 8, p. 1089-1093

Research output: Contribution to JournalArticleAcademicpeer-review

VUV spectroscopic study of the D1Piu state of molecular deuterium

Dickenson, G. D., Ivanov, T. I., Ubachs, W. M. G., Roudjane, M., de Oliveira, N., Joyeux, D., Nahon, L., Tchang-Brillet, W. U. L., Glass-Maujean, M., Schmoranzer, H., Knie, H., Kubler, S. & Ehresmann, A., 2011, In : Molecular Physics. 109, 22, p. 2396-2708

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

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

Widely tunable laser frequency offset lock with 30 GHz range and 5 THz offset

Biesheuvel, J., Noom, D. W. E., Salumbides, E. J., Sheridan, K. T., Ubachs, W. M. G. & Koelemeij, J. C. J., 2013, In : Optics Express. 21, 12, p. 14008-14016

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File

XUV frequency comb metrology on the ground state of helium

Kandula, D. Z., Gohle, C., Pinkert, T. J., Ubachs, W. M. G. & Eikema, K. S. E., 2011, In : Physical Review A. 84, 6, 062512.

Research output: Contribution to JournalArticleAcademicpeer-review

Open Access
File
Chapter

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

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

Search for cosmological mu variation form high-redshift H2 absorption; a status report

Ubachs, W. M. G., Bagdonaite, J., Murphy, M. T., Buning, R. & Kaper, L., 2011, From Varying Couplings to Fundamental Physics. Martins, C. & Molaro, P. (eds.). Berlin-Heidelberg: Springer, p. 125 (Astrophysics and Space Science Proceedings).

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

File
Conference contribution

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

Determination of the ionization and dissociation energies of H2 and He2

Liu, J., Sprecher, D., Merkt, F., Salumbides, E. J. & Ubachs, W., 2012, International Conference of Computational Methods in Sciences and Engineering 2009, ICCMSE 2009. Vol. 1504. p. 495-498 4 p.

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

Direct frequency comb spectroscopy in trapped 40Ca + ions on a dipoleforbidden clock transition

Wolf, A. L., Morgenweg, J., Koelemeij, J. C. J., Van Den Berg, S. A., Ubachs, W. & Eikema, K. S. E., 2011, 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011. 5943528

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