{ "scattering_power_curve": [ { "key": -1000.0, "value": 0.0010 }, { "key": -706.0, "value": 0.2920 }, . . . ], "stopping_power_curve": [ { "key": -10000.0, "value": 0.0010 }, { "key": -1000.0, "value": 0.0010 }, . . . ] }