Zobrazeno 1 - 10
of 441
pro vyhledávání: '"Akira OZAWA"'
Autor:
Fabian Schmid, Jorge Moreno, Johannes Weitenberg, Peter Russbüldt, Theodor W. Hänsch, Thomas Udem, Akira Ozawa
Publikováno v:
APL Photonics, Vol 9, Iss 2, Pp 026105-026105-13 (2024)
Optical frequency combs are typically generated in the near-infrared wavelength range, where many mode-locked lasers operate. Nonlinear frequency conversion can then be used to extend optical frequency metrology to other spectral regions, such as the
Externí odkaz:
https://doaj.org/article/f2f5da18bfcd44728de17d4543a726b8
Publikováno v:
Applied Sciences, Vol 13, Iss 14, p 8081 (2023)
In port and harbour areas, soft soils such as dredged soil can be solidified by mixing them with cement and other solidifiers in a pumping pipe. This method is known as pneumatic flow mixing. In this method, the soil and solidifiers are stirred and m
Externí odkaz:
https://doaj.org/article/0f14927ebe024954b7ffd0588dc3aa6f
Publikováno v:
Physics Letters B, Vol 795, Iss , Pp 432-437 (2019)
We consider the 1s Lamb shift in hydrogen and helium ions, a quantity, required for an accurate determination of the Rydberg constant and the proton charge radius by means of hydrogen spectroscopy, as well as for precision tests of the bound-state QE
Externí odkaz:
https://doaj.org/article/786e888a509341e19235daf932165a3b
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
Abstract The quantum Zeno effect (QZE) is not only interesting as a manifestation of the counterintuitive behavior of quantum mechanics, but may also have practical applications. When a spectroscopy laser is applied to target atoms or ions prepared i
Externí odkaz:
https://doaj.org/article/986d909dbb8749daab37725d76f6cd59
Autor:
Akira Ozawa, Josue Davila-Rodriguez, James R. Bounds, Hans A. Schuessler, Theodor W. Hänsch, Thomas Udem
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Frequency combs are useful tools in high precision measurement including atomic transitions and atomic clocks. Here the authors demonstrate direct frequency comb spectroscopy to shorter wavelengths by probing a transition frequency in a trapped Mg+ i
Externí odkaz:
https://doaj.org/article/db33741c8f9a441eb67718f5338b568c
Publikováno v:
PLoS ONE, Vol 4, Iss 3, p e4956 (2009)
Modern linkage-based approaches employing extended pedigrees are becoming powerful tools for localizing complex quantitative trait loci. For these linkage mapping methods, it is necessary to reconstruct extended pedigrees which include living individ
Externí odkaz:
https://doaj.org/article/7215e86a8e8a4b1ab683769a33825146
Publikováno v:
International Brazilian Journal of Urology, Vol 43, Iss 6, Pp 1185-1189
ABSTRACT A 69-year-old man presented at the hospital with complaints of prolonged stomach pain extending from the week prior. Enhanced computed tomography (CT) revealed a low density area in the retroperitoneal space. A radiologist diagnosed the pati
Externí odkaz:
https://doaj.org/article/0a31ca2060de482592b66b9bdc18ed97
Publikováno v:
The European Physical Journal A. 59
Autor:
Jorge Moreno, Fabian Schmid, Johannes Weitenberg, Savely G. Karshenboim, Theodor W. Hänsch, Thomas Udem, Akira Ozawa
Publikováno v:
European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics
Abstract The energy levels of hydrogen-like atoms and ions are accurately described by bound-state quantum electrodynamics (QED). $$\hbox {He}^{+}$$ He + ions have a doubly charged nucleus, which enhances the higher-order QED contributions and makes
Autor:
Tetsuaki Moriguchi, Akira Ozawa, Yoshihiro Yamato, Mika Hayashi, Reo Kagesawa, Naoto Kaname, Momo Mukai, Keisuke Tomita, Asahi Yano
Publikováno v:
Proceedings of the 24th International Spin Symposium (SPIN2021).