Figure 3
Single-shot speckle contrast measured at Q = 0.0067 Å−1 for various consecutive shots. Inset: probability density function of intensity within part of the speckle pattern corresponding to a wavevector Q = 0.0067 Å−1. The solid line represents the gamma distribution with number of modes M = 2.75 and average count rate ≃ 5.1 photons. |