Zobrazeno 1 - 10
of 7 730
pro vyhledávání: '"A. A., Alexandrova"'
Autor:
Morgan, H. W. T., Elwell, R., Terhune, J. E. S., Tan, H. B. Tran, Perera, U. C., Derevianko, A., Alexandrova, A. N., Hudson, E. R.
The recent laser excitation of the 229Th isomeric transition in a solid-state host opens the door for a portable solid-state nuclear optical clock. However, at present the vacuum-ultraviolet laser systems required for clock operation are not conduciv
Externí odkaz:
http://arxiv.org/abs/2410.23364
Autor:
Zhang, Chuankun, von der Wense, Lars, Doyle, Jack F., Higgins, Jacob S., Ooi, Tian, Friebel, Hans U., Ye, Jun, Elwell, R., Terhune, J. E. S., Morgan, H. W. T., Alexandrova, A. N., Tan, H. B. Tran, Derevianko, Andrei, Hudson, Eric R.
After nearly fifty years of searching, the vacuum ultraviolet $^{229}$Th nuclear isomeric transition has recently been directly laser excited [1,2] and measured with high spectroscopic precision [3]. Nuclear clocks based on this transition are expect
Externí odkaz:
http://arxiv.org/abs/2410.01753
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:
Lavroff, Robert H., Kats, Daniel, Maschio, Lorenzo, Bogdanov, Nikolay, Alavi, Ali, Alexandrova, Anastassia N., Usvyat, Denis
To date, computational methods for modeling defects (vacancies, adsorbates, etc.) rely on periodic supercells in which the defect is far enough from its repeated image such that they can be assumed non-interacting. Defects in real solids, however, ca
Externí odkaz:
http://arxiv.org/abs/2406.03373
Autor:
Green, J, Emmanouilidou, Eve, Morgan, Harry W. T., Laderer, William T., Hu, Chaowei, Loera, Jonathan, Alexandrova, Anastassia N., Ni, Ni
Compared to time-reversal symmetry-protected Z2 topological insulators and Dirac/Weyl semimetals, there are significantly fewer candidates for topological crystalline insulators. SrAg4Sb2 is predicted to exhibit topological crystalline insulator beha
Externí odkaz:
http://arxiv.org/abs/2404.14561
Autor:
Elwell, R., Schneider, Christian, Jeet, Justin, Terhune, J. E. S., Morgan, H. W. T., Alexandrova, A. N., Tan, H. B. Tran, Derevianko, Andrei, Hudson, Eric R.
LiSrAlF$_6$ crystals doped with $^{229}$Th are used in a laser-based search for the nuclear isomeric transition. Two spectroscopic features near the nuclear transition energy are observed. The first is a broad excitation feature that produces red-shi
Externí odkaz:
http://arxiv.org/abs/2404.12311
Publikováno v:
A&A 686, A114 (2024)
Configurations where two spacecraft, such as Parker Solar Probe (PSP) and Solar Orbiter (SolO), are radially aligned provide opportunities to study the evolution of a single solar wind parcel during so called plasma line-ups. The most critical part o
Externí odkaz:
http://arxiv.org/abs/2402.12382
Autor:
Zhu, Guo-Zhu, Lao, Guanming, Dickerson, Claire E., Caram, Justin R., Campbell, Wesley C., Alexandrova, Anastassia N., Hudson, Eric R.
Polyatomic molecules equipped with optical cycling centers (OCCs), enabling continuous photon scattering during optical excitation, are exciting candidates for advancing quantum information science. However, as these molecules grow in size and comple
Externí odkaz:
http://arxiv.org/abs/2311.07012
Herein, we show that single molecules containing multiple optical cycling centers (CaO moieties) can exhibit superradiant phenomena. We demonstrate the accuracy of the Frenkel exciton model at describing these superradiant states via comparisons to h
Externí odkaz:
http://arxiv.org/abs/2310.01534
Autor:
Yuselys Garcia-Martinez, Elena Alexandrova, Valerio Iebba, Carlo Ferravante, Michelle Spinelli, Gianluigi Franci, Angela Amoresano, Alessandro Weisz, Francesco Trepiccione, Margherita Borriello, Diego Ingrosso, Alessandra F. Perna
Publikováno v:
BMC Microbiology, Vol 24, Iss 1, Pp 1-15 (2024)
Abstract Background Chronic Kidney Disease (CKD) is characterized by a methionine-related metabolic disorder involving reduced plasma levels of hydrogen sulfide (H2S) and increased lanthionine. The gut microbiota influences methionine metabolism, pot
Externí odkaz:
https://doaj.org/article/5f11d8da0d5c4ca0ae9e5ee3a1f41622
