624. Study of the process of heat and mass transfer during the evaporation of a liquid with a free surface in a rarefied gas medium: VI Balakhonova, Rep NASA-TT-F-11151, July 1967, 8 pages ( Sci Tech Aerospace Reps, 5 (19), 3555, N67-33864)

Abstract

Large-area silicon drift detectors (SDDs) were used for the first time in the background condition of a collider for precision spectroscopy of the kaonic atom X-rays in the SIDDHARTA experiment for the study of the strong interaction in a low-energy regime. The measurements were performed at the DAΦNE electron–positron collider (LNF, Italy), using gas targets of hydrogen, deuterium, helium-3, and helium-4. A test measurement using the kaonic 4He X-rays showed an excellent performance of the SDD devices under the beam conditions, and a good background suppression capability using the time correlation between the kaonic atom X-rays and the back-to-back correlated K+K− pairs produced by φ decays.