Precision measurement of relative oscillator strengths - V. Comparison of oscillator strengths of Fe I transitions from levels a5 F1-5 (0.86-1.01 eV) and those from a5 D0-4 (0.00-0.12 eV).
Abstract
A photoelectric pyrometer has been built and used to measure the temperature of the Oxford spectroscopic furnace on the International Practical Temperature Scale 1968 to an accuracy of + or - 1 K (3 sigma). Measurements have been made of the relative oscillator strengths of Fe I absorption lines originating from energy levels separated by about 1 eV. These measures have an accuracy of about 0.5 percent and are intended to link existing measures made at Oxford from levels a5 F(1-5) (0.86-1.01 eV) to measures made from levels a5 D(0-4) (0.00-0.12 eV).
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- March 1979
- DOI:
- 10.1093/mnras/186.3.651
- Bibcode:
- 1979MNRAS.186..651A
- Keywords:
-
- Astronomical Spectroscopy;
- Atomic Excitations;
- Atomic Spectra;
- Iron;
- Oscillators;
- Absorption Spectra;
- Furnaces;
- Line Spectra;
- Pyrometers;
- Spectral Line Width;
- Instrumentation and Photography;
- Iron:Oscillator Strengths