R. Gupta

Lifetime measurements in the excited S states of K, Rb, and Cs by the cascade Hanle effect*

W. Happer, B. Bulos, R. Gupta, 1976 .

Hyperfine structure and lifetime measurements of the second-excited D states of rubidium and cesium by cascade fluorescence spectroscopy

W. Happer, W. Happer, C. Tai, 1975 .

Cascade Radio-Frequency Spectroscopy of Excited S and D States of Rubidium; Anomalous D-State Hyperfine Structure

W. Happer, R. Gupta, C. Tai, 1972 .

Cascade-Decoupling Measurements of Excited S -State Hyperfine Structures of Potassium, Rubidium, and Cesium

W. Happer, R. Gupta, S. P. Chang, 1972 .