The Widths of the Solar he i and he II Lines at 584, 537, and 304 Å

In this Letter we report direct measurements from a rocket spectrograph of the widths of the solar He I lines, 152 1s2p and 1s2-1s3p, at 584 and 537 A. We also report the width of the solar resonance line of He II at 304 A. The deduced full widths at hall-maximum intensity are 0.14,0.12, and 0.10 A for the 584, 537, and 304 A lines, respectively. These widths represent averages over the entire Sun. Line profiles corrected for the nonlinear film response are presented for the 584 and 304 A lines. Subject headings: line profiles - spectra, solar