Dosimeter

A method of using dosimeter comprising a measurement chamber and a light sensor, wherein the measurement chamber is filled with a fluorophore and is lightproof, and wherein the light sensor is configured to detect fluorescent light generated by ionizing radiation in the fluorophore in the measurement chamber and to generate a signal that is proportional to the fluence of the detected fluorescent light, the method, comprising:

• using the dosimeter for measuring a radiation dose of a pulsed ionizing radiation having radiation pulses having a length of less than 10 ns, wherein the ionizing radiation has an energy of more than 8 keV.

A spectrometer for determining an energy-dependant radiation dose for ionizing radiation with an initial energy spectrum comprising a plurality of dosimeters, each dosimeter comprising a measurement chamber and a light sensor, wherein the measurement chamber is filled with a fluorophore and is lightproof, and wherein the light sensor is configured to detect fluorescent light generated by ionizing radiation in the fluorophore in the measurement chamber and to generate a signal that is proportional to the fluence of the detected fluorescent light, wherein a wall of the measurement chamber of each dosimeter of the plurality of dosimeters has different absorption properties than a wall of at least one other dosimeter of the plurality of dosimeters, such that the ionizing radiation which generates fluorescent light in the measurement chamber of the respective dosimeter has an energy spectrum which differs both from the initial energy spectrum and from the energy spectrum of the ionizing radiation which generates fluorescent light in the measurement chamber of the at least one dosimeter having a wall having deviating absorption properties.