{ "meta": { "api_type": "NWO Projects API", "version": "1.0.2", "licence": { "name": "CC0 1.0 Universal", "url": "https://creativecommons.org/publicdomain/zero/1.0", "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API." }, "documentation": "https://doi.org/10.5281/zenodo.14918287", "release_date": "2025-08-20T00:00:00", "funder": "https://doi.org/10.13039/501100003246", "ror_id": "https://ror.org/04jsz6e67", "date": "2026-11-05T00:00:00", "count": 1, "per_page": 100, "pages": 1, "page": 1 }, "projects": [ { "project_id": "OCENW.KLEIN.159", "title": "En route to the molecular quantum world: state-to-state inelastic collisions in the Wigner regime", "funding_scheme_id": 3858, "funding_scheme": "Open Competitie ENW - M Doorlopend OC ENW KLEIN pakket 03", "department": "Exacte en Natuurwetenschappen", "sub_department": "Exacte en Natuurwetenschappen", "start_date": "2020-03-01T00:00:00", "end_date": "2024-10-15T00:00:00", "reporting_year": 2019, "summary_nl": "At very low temperatures, atoms and molecules behave very differently than at higher temperatures. At temperatures below ~ 10 Kelvin, the laws of quantum mechanics start governing interactions between atoms and molecules, resulting in bizarre phenomena that have often been predicted theoretically decades ago, but that have been elusive to experimental observation. In this project, we will develop the methods to cool chemically relevant molecules such as NO and ND3 to temperatures as low as 1 mK, and study collisions involving these molecules. This will reveal the appearance of scattering resonances at temperatures below 10 K, and probe the onset of the utracold Wigner regime at temperatures below 100 mK. Using laser-based detection methods, we will be able to image the collision event, yielding unprecedented accurate views on molecular collision processes at the most fundamental quantum mechanical level. This project will directly visualize how molecular collisions transform from “hot” into “ultracold”, thereby opening up a new research direction in the field of ultracold molecules, with potential applications in chemical physics, astrochemistry, and quantum computation schemes.", "summary_en": "At very low temperatures, atoms and molecules behave very differently than at higher temperatures. At temperatures below ~ 10 Kelvin, the laws of quantum mechanics start governing interactions between atoms and molecules, resulting in bizarre phenomena that have often been predicted theoretically decades ago, but that have been elusive to experimental observation. In this project, we will develop the methods to cool chemically relevant molecules such as NO and ND3 to temperatures as low as 1 mK, and study collisions involving these molecules. This will reveal the appearance of scattering resonances at temperatures below 10 K, and probe the onset of the utracold Wigner regime at temperatures below 100 mK. Using laser-based detection methods, we will be able to image the collision event, yielding unprecedented accurate views on molecular collision processes at the most fundamental quantum mechanical level. This project will directly visualize how molecular collisions transform from “hot” into “ultracold”, thereby opening up a new research direction in the field of ultracold molecules, with potential applications in chemical physics, astrochemistry, and quantum computation schemes.", "award_amount": 357079, "grant_id": "https://doi.org/10.61686/OQICS15788", "project_members": [ { "role": "Researcher", "member_id": 540461, "last_name": "Sparling", "degree_pre_nominal": "dr.", "initials": "C.", "first_name": "Christopher", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica", "organisation_id": 49329, "ror": "https://ror.org/016xsfp80", "active": false }, { "role": "Researcher", "member_id": 448342, "last_name": "Kalaitzis", "degree_pre_nominal": "dr.", "initials": "P.", "first_name": "Panos", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica||Institute for Molecules and Materials (IMM)||Spectroscopy of Cold Molecules", "organisation_id": 413651, "ror": "https://ror.org/016xsfp80", "active": false }, { "role": "Researcher", "member_id": 504813, "last_name": "Plomp", "initials": "v.", "first_name": "Vikram", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica||Institute for Molecules and Materials (IMM)||Spectroscopy of Cold Molecules", "organisation_id": 413651, "ror": "https://ror.org/016xsfp80", "active": false }, { "role": "Researcher", "member_id": 505739, "last_name": "Groot", "initials": "W.R.L.", "first_name": "Wesley", "prefix": "De", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica||Institute for Molecules and Materials (IMM)||Spectroscopy of Cold Molecules", "organisation_id": 413651, "ror": "https://ror.org/016xsfp80", "active": false }, { "role": "Main Applicant", "member_id": 221594, "last_name": "Meerakker", "degree_pre_nominal": "prof. dr.", "initials": "S.Y.T.", "first_name": "Bas", "prefix": "van de", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica||Institute for Molecules and Materials (IMM)", "organisation_id": 79554, "ror": "https://ror.org/016xsfp80", "active": true }, { "role": "Project leader", "member_id": 221594, "last_name": "Meerakker", "degree_pre_nominal": "prof. dr.", "initials": "S.Y.T.", "first_name": "Bas", "prefix": "van de", "organisation": "Radboud Universiteit Nijmegen||Faculteit der Natuurwetenschappen, Wiskunde en Informatica||Institute for Molecules and Materials (IMM)||Molecular and Laser Physics", "organisation_id": 80327, "ror": "https://ror.org/016xsfp80", "active": true } ], "products": [ { "title": "Efficient transfer of population between rotational levels in deuterated ammonia\n using THz transitions", "year": 2025, "edition": "123", "start": 2353333, "end": 2353333, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1080/00268976.2024.2353333", "journal_title": "Molecular Physics", "authors": [ { "last_name": "Sparling", "initials": "C", "role": "Auteur" } ] }, { "title": "Production and detection of MJ-resolved samples of ND3", "year": 2026, "edition": "2610003", "start": 1, "end": 15, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1080/00268976.2025.2610003", "journal_title": "Molecular Physics", "authors": [ { "last_name": "Sparling", "initials": "C", "role": "Auteur" } ] }, { "title": "Sensitive Low-Recoil VUV 1 + 1' REMPI Detection of ND3", "year": 2024, "type": "Wetenschappelijk artikel", "url_open_access": "https://pubs.acs.org/doi/10.1021/acs.jpca.4c06253", "journal_title": "J. Phys. Chem. A", "authors": [ { "last_name": "Kalaitzis", "initials": "P", "role": "Auteur" } ] }, { "title": "Cold and controlled collisions using tamed molecular beams", "year": 2024, "type": "Overige Output", "url_open_access": "https://ccmi2024.ist.ac.at/", "authors": [ { "last_name": "van de Meerakker", "initials": "Syt", "role": "Maker" } ] }, { "title": "Low energy collisions of Zeeman-decelerated NH radicals with He atoms", "year": 2023, "edition": "127", "start": 2306, "end": 2313, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1021/acs.jpca.2c08712", "journal_title": "J. Phys. Chem. A", "authors": [ { "last_name": "Plomp", "initials": "V", "role": "Auteur" } ] }, { "title": "Imaging resonance effects in C + H2 collisions using a Zeeman decelerator", "year": 2024, "edition": "15", "start": 4602, "end": 4611, "type": "Wetenschappelijk artikel", "url_open_access": "https://doi.org/10.1021/acs.jpclett.3c03379", "journal_title": "J. Phys. Chem. Lett.", "authors": [ { "last_name": "Plomp", "initials": "V", "role": "Auteur" } ] } ] } ] }