Absolute wavelength measurement of the Lyman-α transition of hydrogen-like silicon

2002 ◽  
Vol 80 (8) ◽  
pp. 867-874 ◽  
Author(s):  
J Tschischgale ◽  
D Klöpfel ◽  
P Beiersdorfer ◽  
G V Brown ◽  
E Förster ◽  
...  
Keyword(s):  
Electron Beam ◽  
Lamb Shift ◽  
Ion Trap ◽  
Wavelength Measurement ◽  
Electron Beam Ion Trap ◽  
Absolute Measurements ◽  
Good Agreement

The wavelengths of the 1s1/2–2p1/2 and 1s1/2–2p3/2 Lyman-α transitions have been measured in hydrogenic silicon with an accuracy of 70 ppm. The measurement was carried out with an electron-beam ion trap with a calibrated double-faced monolithic crystal that enabled absolute measurements of the transition wavelengths. The values for the Lyman-α wavelengths are λLyα1 = 6.180 49(44) Å and λLyα2 = 6.185 56(66) Å. The wavelengths are in good agreement with calculations and allow a determination of the 1s Lamb shift to within 28% in a region that has received little experimental attention. PACS Nos.:32.30Rj, 31.30Jv

Precise wavelength determination of the 4s24p 2P3/2 - 2P1/2 transition in Mo11+ and Ru13+ ions

2021 ◽  
Author(s):  
Yajing Li ◽  
Yintao Wang ◽  
Junyu Fan ◽  
Ran Si ◽  
Jiguang Li ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Dipole Transition ◽  
Experimental Uncertainty ◽  
External Calibration ◽  
Direct Observations ◽  
Electron Beam Ion Trap ◽  
Calibration Methods ◽  
Highly Charged Ion

Abstract The 4s24p 2P3/2 – 2P1/2 magnetic dipole transition in Ga-like ions is interested in developing of high precise highly charged ion clock [Phys. Rev. A, 99, 02213(2019)]. In this work, we present direct observations of the transition in Mo11+ and Ru13+ ions at an electron beam ion trap. Internal and external calibration methods are used for determining the wavelength of the Mo11+ and Ru13+ lines, respectively. Both measurements reach precision levels of a few ppm. Compared with the available values, the current results significantly improve the experimental uncertainty.

Towards a Measurement of then=2 Lamb Shift in Hydrogen-like Nitrogen Using an Electron Beam Ion Trap

2003 ◽  
Vol 146/147 (1-4) ◽  
pp. 59-65 ◽  
Author(s):  
K. Hosaka ◽  
D. N. Crosby ◽  
K. Gaarde-Widdowson ◽  
C. J. Smith ◽  
J. D. Silver ◽  
...  
Keyword(s):  
Electron Beam ◽  
Lamb Shift ◽  
Ion Trap ◽  
Electron Beam Ion Trap

scholarly journals Emission Lines in 290–360 nm of Highly Charged Tungsten Ions W20+–W29+

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 63
Author(s):  
Shota Era ◽  
Daiji Kato ◽  
Hiroyuki A. Sakaue ◽  
Toshiki Umezaki ◽  
Nobuyuki Nakamura ◽  
...  
Keyword(s):  
Electron Beam ◽  
Excited States ◽  
Magnetic Dipole ◽  
Ion Trap ◽  
Emission Lines ◽  
Fusion Plasmas ◽  
Hartree Fock ◽  
Electron Beam Ion Trap ◽  
Forbidden Transitions ◽  
Good Agreement

Forbidden transitions in the near-UV and visible wavelength of highly charged tungsten (W) ions are potentially useful as novel tungsten diagnostics means of fusion plasmas. Emission lines in 290–360 nm from Wq+ ions interacting with an electron beam of 540–1370 eV are measured, using a compact electron-beam-ion-trap. The charge states of 64 lines are identified as W20+–W29+. A magnetic-dipole (M1) line of W29+ between the excited states (4d84f)[(4d5/2−2)44f7/2]13/2→[(4d5/2−2)44f5/2]13/2 is newly identified; the wavelength is determined as 351.03(10) nm in air. The theoretical wavelength calculated using the multiconfiguration Dirac–Hartree–Fock method is in a good agreement with the measurement.

Laser spectroscopy of the 2s lamb shift in hydrogen-like silicon using an electron beam ion trap

1997 ◽  
Vol T73 ◽  
pp. 62-63 ◽  
Author(s):  
T V Back ◽  
P D Groves ◽  
H S Margolis ◽  
P K Oxley ◽  
J D Silver
Keyword(s):  
Electron Beam ◽  
Laser Spectroscopy ◽  
Lamb Shift ◽  
Ion Trap ◽  
Electron Beam Ion Trap

scholarly journals Determination of the ReA Electron Beam Ion Trap electron beam radius and current density with an X-ray pinhole camera

2014 ◽  
Vol 85 (7) ◽  
pp. 073302 ◽  
Author(s):  
Thomas M. Baumann ◽  
Alain Lapierre ◽  
Kritsada Kittimanapun ◽  
Stefan Schwarz ◽  
Daniela Leitner ◽  
...  
Keyword(s):  
Electron Beam ◽  
Current Density ◽  
Ion Trap ◽  
Pinhole Camera ◽  
Trap Electron ◽  
Beam Radius ◽  
X Ray ◽  
Electron Beam Ion Trap

Forbidden Transitions in the Visible Spectra of an Electron Beam Ion Trap (EBIT)

1998 ◽  
Vol 58 (6) ◽  
pp. 599-604 ◽  
Author(s):  
E Träbert ◽  
P Beiersdorfer ◽  
S B Utter ◽  
J R Crespo López-Urrutia
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Electron Beam Ion Trap ◽  
Visible Spectra ◽  
Forbidden Transitions

Soft-X-ray spectra of highly charged Au ions in an electron-beam ion trap

2001 ◽  
Vol 79 (2-3) ◽  
pp. 153-162 ◽  
Author(s):  
E Träbert ◽  
P Beiersdorfer ◽  
K B Fournier ◽  
S B Utter ◽  
K L Wong
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Large Scale ◽  
Ion Trap ◽  
Electron Beam Energy ◽  
X Ray ◽  
Maximum Charge ◽  
Electron Beam Ion Trap ◽  
Atomic Structure Calculations ◽  
Structure Calculations

Systematic variation of the electron-beam energy in an electron-beam ion trap has been employed to produce soft-X-ray spectra (20 to 60 Å) of Au with well-defined maximum charge states ranging from Br- to Co-like ions. Guided by large-scale relativistic atomic structure calculations, the strongest Δn = 0 (n = 4 to n' = 4) transitions in Rb- to Cu-like ions (Au42+ – Au50+) have been identified. PACS Nos.: 32.30Rj, 39.30+w, 31.50+w, 32.20R

Measurements of Temperature Dynamics of Ions Trapped Inside an Electron Beam Ion Trap and Evidence for Ionisation Heating

2001 ◽  
Vol T92 (1) ◽  
pp. 147-149 ◽  
Author(s):  
F. J. Currell ◽  
F. J. Currell ◽  
H. Kuramoto ◽  
S. Ohtani ◽  
C. Scullion ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Electron Beam Ion Trap ◽  
Temperature Dynamics
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