The Infrared Spectrum of Uranium Hollow Cathode Lamps from 850 nm to 4000 nm: Wavenumbers and Line Identifications from Fourier Transform Spectra
Abstract
We provide new measurements of wavenumbers and line identifications of 10, 100 U I and U II near-infrared (NIR) emission lines between 2500 cm-1 and 12, 000 cm-1 (4000-850 nm) using archival Fourier transform spectrometer spectra from the National Solar Observatory. This line list includes isolated uranium lines in the Y, J, H, K, and L bands (0.9-1.1 μm, 1.2-1.35 μm, 1.5-1.65 μm, 2.0-2.4 μm, and 3.0-4.0 μm, respectively), and provides six times as many calibration lines as thorium in the NIR spectral range. The line lists we provide enable inexpensive, commercially available uranium hollow cathode lamps to be used for high-precision wavelength calibration of existing and future high-resolution NIR spectrographs.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- August 2011
- DOI:
- 10.1088/0067-0049/195/2/24
- arXiv:
- arXiv:1107.4091
- Bibcode:
- 2011ApJS..195...24R
- Keywords:
-
- astronomical databases: miscellaneous;
- atomic data;
- line: identification;
- standards;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Astrophysics - Earth and Planetary Astrophysics;
- Physics - Atomic Physics
- E-Print:
- 23 pages, 6 Figures