Ralf Guckert
Los Alamos National Laboratory
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Ralf Guckert.
Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms | 1997
Ralf Guckert; E.P. Chamberlin; D.W. Preston; V. Sandberg; D. Tupa; D. J. Vieira; H. Wollnik; X.X. Zhao
The efficient coupling of a magneto-optical trap to a mass separator is being developed to undertake high-precision electroweak interaction measurements in a series of radioisotopes. The use of ion implantation and subsequent heated-foil release is being pursued as a suitable way of introducing radioactive samples into the ultrahigh vacuum region of an optical trap without gas loading. This paper discusses the layout of the mass separator,the coupling to a magneto- optical trap, and the implantation and release scheme.
High-power lasers and applications | 1998
X. Zhao; D. J. Vieira; Ralf Guckert; S. G. Crane
We describe the coupling of a magneto-optical trap to amass separator for the ultra-sensitivity detection of selected radioactive species. As a proof of principle test, we have demonstrated the trapping of approximately 6 million
SPIE `95: SPIE conference on optics, electro-optics, and laser application in science, engineering and medicine, San Jose, CA (United States), 5-14 Feb 1995 | 1995
D. J. Vieira; Ralf Guckert; D. W. Preston; V. Sandberg; D. Tupa; J. M. Wouters
_82)Rb atoms using an ion implementation and heated foil release method of introducing the sample into a trapping cell with minimal gas loading. Gamma-ray counting techniques were used to determine the efficiencies of each step in the process. By far the weakest step in the process is the efficiency of the optical trap itself. Further improvements in the quality of the nonstick dryfilm coating on the inside of the trapping cell and the possible use of larger diameter laser beams are indicated. In the presence of a large background of scattered light, this initial work achieved a detection sensitivity of approximately 4,000 trapped atoms. Improved detection schemes using a pulsed trap and gated photon detection method are outlined. Application of this technology to the areas of environmental monitoring and nuclear proliferation are foreseen.
Physical Review A | 1998
Ralf Guckert; X. Zhao; S.G. Crane; Andrew Hime; W.A. Taylor; D. Tupa; D. J. Vieira; H. Wollnik
The use of an optical trap for the quantitative detection of small numbers of radioactive atoms is featured. Presently under construction is a system consisting of a high-efficiency magneto-optical trap (MOT) coupled to a mass separator. Mass-separated samples will be implanted into a thin platinum foil, subsequently released from the foil by heating, and resonantly trapped in the MOT. The number of atoms in the trap will be quantitatively deduced from the amplitude of the fluorescence signal. Measurements for different isotopes are planned by appropriately shifting the trapping and repumping laser frequencies of the optical trap. Our initial investigations will concentrate on the determination of trace amounts of 135Cs and 137Cs.
Physical Review A | 1999
X. Zhao; Ralf Guckert; D. J. Vieira
Physical Review A | 1999
X. Zhao; S. G. Crane; Ralf Guckert; D. J. Vieira
Trapped charged particles and fundamental physics | 2008
D. J. Vieira; S. J. Brice; S.G. Crane; A. Goldschmidt; Ralf Guckert; Andrew Hime; D. Tupa; X. Zhao
Archive | 2001
S. G. Crane; Stephen J. Brice; Michael David di Rosa; Azriel Goldschmidt; Ralf Guckert; Andrew Hime; Jason J. Kitten; D. J. Vieira; Xiaoyin Zhao
Archive | 2000
Andrew Hime; Stephen J. Brice; S. G. Crane; Azriel Goldschmidt; Ralf Guckert; D. J. Vieira; Xiaoyin Zhao
Archive | 2000
S. G. Crane; Stephen J. Brice; Azriel Goldschmidt; Ralf Guckert; Andrew Hime; Jason J. Kitten; D. J. Vieira; Xiaoyin Zhao