Hyperfine structure analysis in the intense spectral lines of the neutral Cu atom falling in the 353–809 nm wavelength region using a Fourier transform spectrometer

Abstract

Hyperfine structure analyses have been performed in the high-resolution spectrum of the neutral copper atom covering the wavelength region of 353–809nm using Fourier transform spectroscopy. A DC discharge of natural copper produced in a liquid nitrogen cooled hollow cathode lamp used as a light source and a photomultiplier tube as well as Si photodiodes were employed as the light detectors. The hfs studies in 17 transitions of the neutral copper atom originating from 17 energy levels for 63Cu have been reported here. The present investigation has provided the magnetic dipole coupling constant A and electric quadrupole coupling constant B for the first time for the following 6 even-parity levels lying at 49,935, 49,942cm−1, of 3d104d configuration, 52,848cm−1 of 3d106s configuration, 55,387, 55,391cm−1 3d105d configuration and 71,978cm−1 of 3d104s4d configuration. The sign convention of the previously-reported hfs A value amounting to 1920MHz for the level at 44,963cm−1 of 3d94s4p configuration has been revised to −1920MHz. Measurements reported earlier of A and B hfs constants for the 11 odd-parity energy levels also have been confirmed.