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Over ons Praktische zaken Waar vindt u ons L. Willmann, Dr

L. Willmann, Dr

Universitair hoofddocent

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Faculteit Science and Engineering

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l.willmann rug.nl

ORCID Research Portal

Research interests

The focus of the research is on testing predictions of the Standard Model of Particle Physics, which is our currently best model of the physicsal world. Such test require a well chosen quantum mechanical system, which can be experimentally studied at a suffcient precission. My interest is on the design of suitable experimental strategies and the execution of these. The experimental methods are selected from fields like particle physics, atomic and molecular physics, laser physics and quantum mechanics. Examples from my work are setting limits on lepton number violations from searches for muonium-antimuonium conversion, Bose-Einstein condensation, in particular of atomic hydrogen, the weak interaction in atomic systems (Atomic Partity Violation, APV) such as single trapped radium or barium ions, and searches for permanent electric dipole moments on fundamental particles (EDMs) in e.g. radium, xenon or molecules like BaF.

Within the NL-eEDM collaboration we have designed and build a sensitive new setup, which is starting to produce the first results on an electron EDM. Further research interest is in new strategies towards precission measurement of the magnetic anomaly (g-2) of the muon.

Publicaties

Novel spin-precession method for sensitive EDM searches

Boeschoten, A., Marshall, V. R., Meijknecht, T. B., Touwen, A., Bethlem, H. L., Borschevsky, A., Hoekstra, S., Hofslot, J. W. F. V., Jungmann, K., Mooij, M. C., Timmermans, R. G. E., Ubachs, W. & Willmann, L., 11-mrt.-2023, arXiv, 6 blz.

Onderzoeksoutput: Voordruk ›

Benchmarking of the Fock-space coupled-cluster method and uncertainty estimation: Magnetic hyperfine interaction in the excited state of BaF

NL-eEDM Collaboration, Denis, M., Haase, P. A. B., Mooij, M. C., Chamorro, Y., Aggarwal, P., Bethlem, H. L., Boeschoten, A., Borschevsky, A., Esajas, K., Hao, Y., Hoekstra, S., Van Hofslot, J. W. . F., Marshall, V. R., Meijknecht, T. B., Timmermans, R. G. E., Touwen, A., Willmann, L. & Yin, Y., mei-2022, In: Physical Review A. 105, 5, 10 blz., 052811.

Onderzoeksoutput › › peer review

Characterization of a continuous muon source for the Muon-Induced X-ray Emission (MIXE) Technique

Biswas, S., Gerchow, L., Luetkens, H., Prokscha, T., Antognini, A., Berger, N., Cocolios, T. E., Dressler, R., Indelicato, P., Jungmann, K., Kirch, K., Knecht, A., Papa, A., Pohl, R., Pospelov, M., Rapisarda, E., Reiter, P., Ritjoho, N., Roccia, S., Severijns, N., & 5 anderenSkawran, A., Vogiatzi, S. M., Wauters, F., Willmann, L. & Amato, A., 8-feb.-2022, (Submitted) arXiv, 16 blz.

Onderzoeksoutput: Voordruk ›

Characterization of a Continuous Muon Source for the Non-Destructive and Depth-Selective Elemental Composition Analysis by Muon Induced X-and Gamma-rays

Biswas, S., Gerchow, L., Luetkens, H., Prokscha, T., Antognini, A., Berger, N., Cocolios, T. E., Dressler, R., Indelicato, P., Jungmann, K., Kirch, K., Knecht, A., Papa, A., Pohl, R., Pospelov, M., Rapisarda, E., Reiter, P., Ritjoho, N., Roccia, S., Severijns, N., & 5 anderenSkawran, A., Vogiatzi, S. M., Wauters, F., Willmann, L. & Amato, A., 1-mrt.-2022, In: Applied Sciences (Switzerland). 12, 5, 14 blz., 2541.

Onderzoeksoutput › › peer review

eEDM sensitive searches with BaF molecules

Meijknecht, T., Aggarwal, P., Bethlem, H., Boeschoten, A., Borschevsky, A., Denis, M., Haase, P., Hoekstra, S., van Hofslot, J., Jungmann, K-P., Marshall, G., Mooij, M., Timmermans, R., Touwen, A., Ubachs, W., Willmann, L. & Yin, Y., 2022, Verhandlungen der Deutschen Physikalischen Gesellschaft: Erlangen 2022. Deutsche Physikalische Gesellschaft, Vol. 2022. MO 17.2

Onderzoeksoutput ›

A supersonic laser ablation beam source with narrow velocity spreads

Aggarwal, P., Bethlem, H. L., Boeschoten, A., Borschevsky, A., Esajas, K., Hao, Y., 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., 1-mrt.-2021, In: Review of Scientific Instruments. 92, 3, 7 blz., 033202.

Onderzoeksoutput › › peer review

Deceleration and Trapping of SrF Molecules

Aggarwal, P., Yin, Y., Esajas, K., Bethlem, H. L., Boeschoten, A., Borschevsky, A., Hoekstra, S., Jungmann, K., Marshall, V. R., Meijknecht, T. B., Mooij, M. C., Timmermans, R. G. E., Touwen, A., Ubachs, W. & Willmann, L., 22-okt.-2021, In: Physical Review Letters. 127, 17, 7 blz., 173201.

Onderzoeksoutput › › peer review

Fundamental physics with cold radioactive atoms

Sakemi, Y., Aoki, T., Calabrese, R., Haba, H., Harada, K., Hayamizu, T., Ichikawa, Y., Jungmann, K., Kastberg, A., Kotaka, Y., Matsuda, Y., Matsuo, Y., Nagahama, H., Nakamura, K., Otsuka, M., Ozawa, N., Tanaka, K. S., Uchiyama, A., Ueno, H. & Willmann, L., 5-feb.-2021, Proceedings of the 14th Asia Pacific Physics Conference. Tou, T-Y., Yokoyama, J., Shukor, R. A., Tanaka, K., Choi, H. J., Matsumoto, R., Chin, O-H., Chin, J. H. & Ratnavelu, K. (redactie). American Institute of Physics Inc., 7 blz. 080020. (AIP Conference Proceedings; vol. 2319).

Onderzoeksoutput › › peer review

Muonium-antimuonium conversion

Willmann, L. & Jungmann, K., 6-sep.-2021, In: SciPost Physics. Proc. 5, 009, 7 blz.

Onderzoeksoutput › › peer review

Systematic study and uncertainty evaluation of P, T-odd molecular enhancement factors in BaF

Haase, P. A. B., Doeglas, D. J., Boeschoten, A., Eliav, E., Iliaš, M., Aggarwal, P., Bethlem, H. L., Borschevsky, A., Esajas, K., Hao, Y., Hoekstra, S., Marshall, V. R., Meijknecht, T. B., Mooij, M. C., Steinebach, K., Timmermans, R. G. E., Touwen, A. P., Ubachs, W., Willmann, L. & Yin, Y., 21-jul.-2021, In: Journal of Chemical Physics. 155, 3, 14 blz., 034309.

Onderzoeksoutput › › peer review

Alle (137) publicaties

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