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L. Willmann, Dr

Associate Professor

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Faculty of Science and Engineering

Telephone:

+31 50 36 33566

E-mail:

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.

Publications

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-Mar-2023, (Submitted) arXiv, 6 p.

Research output: Working paper › Preprint › Academic

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., 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., May-2022, In: Physical Review A. 105, 5, 10 p., 052811.

Research output: Contribution to journal › Article › Academic › 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 othersSkawran, A., Vogiatzi, S. M., Wauters, F., Willmann, L. & Amato, A., 8-Feb-2022, (Submitted) arXiv, 16 p.

Research output: Working paper › Preprint › Academic

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 othersSkawran, A., Vogiatzi, S. M., Wauters, F., Willmann, L. & Amato, A., 1-Mar-2022, In: Applied Sciences (Switzerland). 12, 5, 14 p., 2541.

Research output: Contribution to journal › Article › Academic › 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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

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-Mar-2021, In: Review of Scientific Instruments. 92, 3, 7 p., 033202.

Research output: Contribution to journal › Article › Academic › 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-Oct-2021, In: Physical Review Letters. 127, 17, 7 p., 173201.

Research output: Contribution to journal › Article › Academic › 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. (eds.). American Institute of Physics Inc., 7 p. 080020. (AIP Conference Proceedings; vol. 2319).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Muonium-antimuonium conversion

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

Research output: Contribution to journal › Article › Academic › 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 p., 034309.

Research output: Contribution to journal › Article › Academic › peer-review

All (137) publications

View full research profile

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