Zobrazeno 1 - 10
of 19 768
pro vyhledávání: '"Schumm A"'
Building on recent advances of the embedded cluster approach combined with multiconfigurational theory, this work investigates the electronic states in thorium-doped CaF2 crystals. Th:CaF2 is currently establishing as a promising material for solid-s
Externí odkaz:
http://arxiv.org/abs/2410.00230
Autor:
Shigapov, Renat, Schumm, Irene
FAIR GPT is a first virtual consultant in ChatGPT designed to help researchers and organizations make their data and metadata compliant with the FAIR (Findable, Accessible, Interoperable, Reusable) principles. It provides guidance on metadata improve
Externí odkaz:
http://arxiv.org/abs/2410.07108
Autor:
Higgins, Jacob S., Ooi, Tian, Doyle, Jack F., Zhang, Chuankun, Ye, Jun, Beeks, Kjeld, Sikorsky, Tomas, Schumm, Thorsten
Quantum state-resolved spectroscopy of the low energy thorium-229 nuclear transition was recently achieved. The five allowed transitions within the electric quadrupole splitting structure were measured to the kilohertz level in a calcium fluoride hos
Externí odkaz:
http://arxiv.org/abs/2409.11590
Autor:
Pineda, S. V., Chhetri, P., Bara, S., Elskens, Y., Casci, S., Alexandrova, A. N., Au, M., Athanasakis-Kaklamanakis, M., Bartokos, M., Beeks, K., Bernerd, C., Claessens, A., Chrysalidis, K., Cocolios, T. E., Correia, J. G., De Witte, H., Elwell, R., Ferrer, R., Heinke, R., Hudson, E. R., Ivandikov, F., Kudryavtsev, Yu., Köster, U., Kraemer, S., Laatiaoui, M., Lica, R., Merckling, C., Morawetz, I., Morgan, H. W. T., Moritz, D., Pereira, L. M. C., Raeder, S., Rothe, S., Schaden, F., Scharl, K., Schumm, T., Stegemann, S., Terhune, J., Thirolf, P. G., Tunhuma, S. M., Bergh, P. Van Den, Van Duppen, P., Vantomme, A., Wahl, U., Yue, Z.
A comparative vacuum ultraviolet spectroscopy study conducted at ISOLDE-CERN of the radiative decay of the $^{229m}$Th nuclear clock isomer embedded in different host materials is reported. The ratio of the number of radiative decay photons and the n
Externí odkaz:
http://arxiv.org/abs/2408.12309
Autor:
Beeks, Kjeld, Kazakov, Georgy A., Schaden, Fabian, Morawetz, Ira, de Col, Luca Toscani, Riebner, Thomas, Bartokos, Michael, Sikorsky, Tomas, Schumm, Thorsten, Zhang, Chuankun, Ooi, Tian, Higgins, Jacob S., Doyle, Jack F., Ye, Jun, Safronova, Marianna S.
State-resolved laser spectroscopy at the 10$^{-12}$ precision level recently reported in $arXiv$:2406.18719 determined the fractional change in nuclear quadrupole moment between the ground and isomeric state of $^{229}\rm{Th}$, $\Delta Q_0/Q_0$=1.791
Externí odkaz:
http://arxiv.org/abs/2407.17300
Autor:
Zhang, Chuankun, Ooi, Tian, Higgins, Jacob S., Doyle, Jack F., von der Wense, Lars, Beeks, Kjeld, Leitner, Adrian, Kazakov, Georgy, Li, Peng, Thirolf, Peter G., Schumm, Thorsten, Ye, Jun
Publikováno v:
Nature 633, 63-70 (2024)
Optical atomic clocks$^{1,2}$ use electronic energy levels to precisely keep track of time. A clock based on nuclear energy levels promises a next-generation platform for precision metrology and fundamental physics studies. Thorium-229 nuclei exhibit
Externí odkaz:
http://arxiv.org/abs/2406.18719
Stochastic Analytic Continuation (SAC) of Quantum Monte Carlo (QMC) imaginary-time correlation function data is a valuable tool in connecting many-body models to experimentally measurable dynamic response functions. Recent developments of the SAC met
Externí odkaz:
http://arxiv.org/abs/2406.06763
Autor:
Schumm, Leon, Abdel-Khalek, Hazem, Brown, Tom, Ueckerdt, Falko, Sterner, Michael, Fioriti, Davide, Parzen, Max
As global demand for green hydrogen rises, potential hydrogen exporters move into the spotlight. However, the large-scale installation of on-grid hydrogen electrolysis for export can have profound impacts on domestic energy prices and energy-related
Externí odkaz:
http://arxiv.org/abs/2405.14717
Autor:
Hiraki, Takahiro, Okai, Koichi, Bartokos, Michael, Beeks, Kjeld, Fujimoto, Hiroyuki, Fukunaga, Yuta, Haba, Hiromitsu, Kasamatsu, Yoshitaka, Kitao, Shinji, Leitner, Adrian, Masuda, Takahiko, Ming, Guan, Nagasawa, Nobumoto, Ogake, Ryoichiro, Pimon, Martin, Pressler, Martin, Sasao, Noboru, Schaden, Fabian, Schumm, Thorsten, Seto, Makoto, Shigekawa, Yudai, Shimizu, Koutaro, Sikorsky, Tomas, Tamasaku, Kenji, Takatori, Sayuri, Watanabe, Tsukasa, Yamaguchi, Atsushi, Yoda, Yoshitaka, Yoshimi, Akihiro, Yoshimura, Koji
Publikováno v:
Nat Commun 15, 5536 (2024)
The radioisotope Th-229 is renowned for its extraordinarily low-energy, long-lived nuclear first-excited state. This isomeric state can be excited by VUV lasers and the transition from the ground state has been proposed as a reference transition for
Externí odkaz:
http://arxiv.org/abs/2405.09577
Autor:
Braun, S., Buat, Q., Ding, J., Kammel, P., Mazza, S. M., McKinney-Martinez, F., Molnar, A., Lansdell, C., Ott, J., Seiden, A., Schumm, B., Zhao, Y.
Low-Gain Avalanche Detectors (LGADs) are a type of thin silicon detector with a highly doped gain layer that provides moderate internal signal amplification. One recent challenge in the use of LGADs, studied by several research groups, is the gain su
Externí odkaz:
http://arxiv.org/abs/2405.02550