Zobrazeno 1 - 10
of 11
pro vyhledávání: '"B R Walton"'
Autor:
G. P. Barwood, B. R. Walton, G Huang, S. N. Lea, P. Gill, H. A. Klein, H. S. Margolis, Krzysztof Szymaniec, K. Hosaka
Publikováno v:
International Conference on Space Optics — ICSO 2006.
Increasingly stringent demands on atomic timekeeping, driven by applications such as global navigation satellite systems (GNSS), communications, and very-long baseline interferometry (VBLI) radio astronomy, have motivated the development of improved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0164e532ae98e99d9eba0bf29955875
https://doi.org/10.1117/12.2308177
https://doi.org/10.1117/12.2308177
Autor:
K E Koch, B R Walton
Publikováno v:
Southern Medical Journal. 90:758-761
Thyroglossal duct carcinoma is rare, and its presentation is similar to that of a thyroglossal duct cyst: a nontender, palpable mass in the midline location. Rapid increase in growth may be a sign of malignancy, but the diagnosis is based on the path
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b15745339e83d57b421924270a5f7cf
https://doi.org/10.1097/00007611-199707000-00024
https://doi.org/10.1097/00007611-199707000-00024
Autor:
Patrick Gill, Helen S. Margolis, G. Huang, S. N. Lea, H. A. Klein, Giuseppe Marra, Geoffrey P. Barwood, V. Tsatourian, B. R. Walton
Publikováno v:
Frequency Standards and Metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99ed0cf15591f61c2b1289e4b396f4c6
https://doi.org/10.1142/9789812838223_0027
https://doi.org/10.1142/9789812838223_0027
Autor:
Helen S. Margolis, G. Huang, K. Hosaka, R. M. Godun, A. Stannard, Patrick Gill, S A King, S. N. Lea, S. A. Webster, B. R. Walton
Publikováno v:
Frequency Standards and Metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::669660ec3f43da5dbae2616cf4167f85
https://doi.org/10.1142/9789812838223_0028
https://doi.org/10.1142/9789812838223_0028
Publikováno v:
Physical Review A. 79
We report on precision laser spectroscopy of the ${^{2}S}_{1/2}(F=0)\text{\ensuremath{-}}{^{2}F}_{7/2}(F=3,{m}_{F}=0)$ clock transition in a single ion of ${^{171}\text{Y}\text{b}}^{+}$. A linewidth of $l40\text{ }\text{Hz}$ is observed and frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1846336320c93c0238ad371428b9626a
https://doi.org/10.1103/physreva.79.033403
https://doi.org/10.1103/physreva.79.033403
Publikováno v:
2008 Conference on Precision Electromagnetic Measurements Digest.
We report precision laser spectroscopy of the 2S1/2 (F = 0, mF=0)-2F7/2 (F =3, mF= 0) clock transition in a single, trapped, laser cooled ion of 171Yb+. The absolute frequency is measured to be 642 121 496 772 656 (12) Hz, a factor of 20 more accurat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::586ecc5f526f6f9ad57d4c784a2d98de
https://doi.org/10.1109/cpem.2008.4574670
https://doi.org/10.1109/cpem.2008.4574670
Autor:
H. A. Klein, Helen S. Margolis, C.D. Langham, B. R. Walton, Patrick E. G. Baird, J.L. Flowers
Publikováno v:
CPEM Digest (Conference on Precision Electromagnetic Measurements).
The 2S 1/2-8D 5/2 transition in atomic hydrogen has been observed as part of the preparation for a Rydberg constant determination at the National Physical Laboratory, UK. We describe this observation and the ongoing improvements to the experimental a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9956023605f83d5bda56b9554ab6e1e
http://ora.ox.ac.uk/objects/uuid:1413d378-d14e-44fe-9254-7f5afac868ab
http://ora.ox.ac.uk/objects/uuid:1413d378-d14e-44fe-9254-7f5afac868ab
Autor:
K. Hosaka, Guilong Huang, S. A. Webster, Patrick Gill, A. Stannard, B. R. Walton, H. A. Klein, Helen S. Margolis, Geoffrey P. Barwood, S. N. Lea
Publikováno v:
AIP Conference Proceedings.
Forbidden transitions in single laser‐cooled trapped ions provide highly stable and accurate references for optical frequency standards. This paper describes recent progress on strontium and ytterbium ion optical frequency standards under developme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ab44dd5652b32df240a016b9d1d4e0c
https://doi.org/10.1063/1.2400638
https://doi.org/10.1063/1.2400638
Autor:
Helen S. Margolis, S. N. Lea, Geoffrey P. Barwood, S. A. Webster, B. R. Walton, H. A. Klein, A. Stannard, Patrick Gill, K. Hosaka
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
Forbidden transitions in single laser-cooled trapped ions provide highly stable and accurate references for optical frequency standards. This paper describes recent progress on strontium and ytterbium ion optical frequency standards under development
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa3f5acfadcf8c1328175dd88feb60d6
https://doi.org/10.1109/cleo.2006.4627843
https://doi.org/10.1109/cleo.2006.4627843
Publikováno v:
IET Optoelectronics. 2:182
A new transportable frequency comb has been developed at the National Physical Laboratory. The transportable frequency comb is based around a MenloSystems FC1500 Optical Frequency Synthesizer, which is capable of measuring any frequency between 0.5 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c983a7689eb423befd20d6ccb39bf908
https://doi.org/10.1049/iet-opt:20070087
https://doi.org/10.1049/iet-opt:20070087