Zobrazeno 1 - 10
of 25
pro vyhledávání: '"L P. Ratliff"'
Autor:
M. Mantraga, H. Tawara, Nancy Brickhouse, D.A. Landis, E. E. Haller, Herbert W. Schnopper, L P. Ratliff, Norman W. Madden, J. M. Laming, John D. Gillaspy, Endre Takacs, Marco Barbera, Eric H. Silver, Jeffrey W. Beeman, K. Makonyi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 205:144-155
The importance of the combination of electron beam ion trap (EBIT) spectroscopy with X-ray microcalorimeters in the field of astrophysics was discussed. X-ray astronomy involves heavily charged ion instruments , especially EBIT, to obtain improved qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::202d412f8d604ff5a47e307e0944ab19
https://doi.org/10.1016/s0168-583x(03)00937-6
https://doi.org/10.1016/s0168-583x(03)00937-6
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 205:605-609
X-rays originating from a series of the cascades after electron capture into highly excited Rydberg states have been observed from low energy, highly charged Kr q + ions ( q =27–36) colliding with neutral Ar atoms. The intensity ratio between L ( n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34cb6dd9686f3f8f774228a26470d97e
https://doi.org/10.1016/s0168-583x(03)00949-2
https://doi.org/10.1016/s0168-583x(03)00949-2
Autor:
Ronaldo Minniti, J Pedulla, L P. Ratliff, Endre Takacs, Richard D. Deslattes, Z Berenyi, John D. Gillaspy, N Stolterfoht
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:1277-1287
We have studied the spectrum of x-rays emitted when 130 and 200 keV kinetic energy hydrogen-like argon ions impact silicon dioxide surfaces. Specifically, we were interested in the mechanism for creation of K-shell holes in the silicon target atoms,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dc0db340494cd315012a30ccc54ca6a
https://doi.org/10.1088/0953-4075/34/7/310
https://doi.org/10.1088/0953-4075/34/7/310
Publikováno v:
Physica Scripta. :22-26
Nanoscale dots created on the surface of a highly oriented pyrolitic graphite sample by individual highly charged xenon projectile ions were observed using an in-situ scanning tunneling microscope. This is the first time that such features have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06d75c0d74c8bb2c108b3b33ccadcdd7
https://doi.org/10.1238/physica.topical.092a00022
https://doi.org/10.1238/physica.topical.092a00022
Autor:
E W. Bell, F. G. Serpa, Martin P. Stockli, L P. Ratliff, D. C. Parks, Robert W. Schmieder, John D. Gillaspy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 134:46-52
We have measured the damage caused by the impact of low velocity, highly charged ions on insulating surfaces. Atomic force microscopy allows us to observe directly the surface topography with nanometer resolution. Using constant velocity (100 keV) Xe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::274d82550f77b27cee09edef845cab89
https://doi.org/10.1016/s0168-583x(98)80032-3
https://doi.org/10.1016/s0168-583x(98)80032-3
Publikováno v:
Review of Scientific Instruments. 68:1998-2002
We describe our newly modified beam line and present its performance in conjunction with the National Institute of Standards and Technology electron-beam ion trap. We find that, contrary to previously reported results from similar ion sources, the hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bba7809af31b992c4733a98c03932b1a
https://doi.org/10.1063/1.1148087
https://doi.org/10.1063/1.1148087
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:289-308
We demonstrate a number of two-colour spectroscopy techniques where the first step is the photoassociation of laser-cooled and trapped sodium atoms to form bound states of . High-resolution spectra of are obtained. Spectra of the `purely long-range'
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1aebf07265a46c371c76c0870b5bac01
https://doi.org/10.1088/0953-4075/30/2/021
https://doi.org/10.1088/0953-4075/30/2/021
Publikováno v:
Hyperfine Interactions. 108:59-72
An overview is given of recent activities at the NIST electron beam ion trap (EBIT) facility. The machine has been operational for almost three years. Important characteristics and demonstrated capabilities of our EBIT are presented. Selected results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb9af0b418af2e5b742e46e53472e52c
https://doi.org/10.1023/a:1012625721471
https://doi.org/10.1023/a:1012625721471
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 29:L881-L888
Photodetachment from in a magnetic field has been studied experimentally using light with energies between 14400 and . Presented here are high-resolution data which exhibit sharp magnetic field structure at thresholds and low-resolution data which sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0729fd2d4df2a53322071c62ae0f9d72
https://doi.org/10.1088/0953-4075/29/24/004
https://doi.org/10.1088/0953-4075/29/24/004
Publikováno v:
Review of Scientific Instruments. 67:2528-2533
The design and operation of a beam line for transporting and charge‐to‐mass selecting highly charged ions extracted from the National Institute of Standards and Technology electron beam ion trap (EBIT) are described. This beam line greatly extend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::832bf2d8ecae90f80fa233a52b174545
https://doi.org/10.1063/1.1147192
https://doi.org/10.1063/1.1147192