Fig. 6From: Low-energy particle experiments–ion mass analyzer (LEPi) onboard the ERG (Arase) satelliteAzimuthal angle response obtained in laboratory experiments. Proton beams with the energy of 12 keV are used. 0 deg and 90 deg coincide with \(+\,{Y}_{\text{ sc }}\) and \(+\,{Z}_{\text{ sc }}\) directions, respectively (see Figs. 1, 2)Back to article page