Fig. 1: Experimental image.
From: Observation of the geometric phase effect in the H+HD→H2+D reaction below the conical intersection
The experimental image of the D product from the H+HD → H2+D reaction at 2.28 eV. “H”, “HD” and “CM” denote the velocity vectors of H beam, HD molecular beam and the origin of center of mass frame, respectively, relative to the origin of the laboratory coordinate system. The crossing angle of the H and HD beams is set to 160°. The forward (0°) and the backward (180°) scattering directions for the H2 coproduct are defined in the center-of-mass frame relative to the H-atom beam direction, and are denoted as “F” and “B” in the image, respectively. The ro-vibrational states of H2 products are pointed out by arrows and labeled as H2 (v′ = 0, j′ = 11 & v′ = 1, j′ = 7) and H2 (v′ = 1, j′ = 9 & v' = 2, j′ = 3). The normalized intensity of the image is defined by the color scale on the left of the image.
