Humidity effects on the dose response of radiachromic nylon film dosimeters

Radiation-induced demagnetization of Nd-Fe-B permanent magnets.

“…Through a collaboration with NIST, a technique using radiachromic films was considered, tested, and calibrated at the APS [15]. Radiachromic films are nylon-based aminotriphenyl methane dye derivatives [22,23]. Upon exposure to ultraviolet light or ionizing radiation, the films undergo radiation-induced coloration by photoionization [22,24].…”

Radiation dose measurements of the insertion devices using radiachromic film dosimeters.

“…The nylon-based material used in radiachromic films exhibits few or no environmental affects [12]. The films displayed a constant response for exposures in air and vacuum, as well as in the presence of ozone [12,13,20]. These stable conditions, along with simple handling procedures and no temperature dependence up to 50°C [15], led to the implementation of radiachromic film dosimetry for measuring the absorbed doses received by the APS insertion devices.…”

“…Radiachromic film dosimeters are nylon-based aminotriphenyl methane dye derivatives [12,13]. Upon exposure to ultraviolet light or ionizing radiation, these films undergo radiation-induced coloration by photoionization [12,14].…”

Radiation dose measurements of the insertion devices.

“…The nylon-based material used in radiachromic films exhibits few or no environmental affects [12]. The films displayed a constant response for exposures in air and vacuum, as well as in the presence of ozone [12,13,20]. These stable conditions along with simple handling procedures and no temperature dependence up to 50°C [15], led to the implementation of radiachromic films as the technique of choice for measuring the absorbed doses received by the APS insertion devices.…”

“…Radiachromic films are nylon-based aminotriphenyl methane dye derivatives [12,13]. Upon exposure to ultraviolet light or ionizing radiation, these films undergo radiationinduced coloration by photoionization [12,14] The photochemical reaction that takes place when the radiachromic films are exposed to ultraviolet light or ionizing radiation is displayed in Figure 1.…”