TY - JOUR
T1 - Luminescence response of CsI
T2 - Na to electron pulse irradiation
AU - Yakovlev, V.
AU - Trefilova, L.
AU - Karnaukhova, A.
AU - Ganja, Yu
PY - 2013/4/1
Y1 - 2013/4/1
N2 - This paper investigates the influence of activator concentration and temperature on the scintillation process in CsI:Na crystal which was excited by a pulsed electron beam (Eex = 0.25 MeV, t1/2 = 15 ns, W = 0.003...0.16 J/cm2) at temperature within 77-300 K. It has been established that the transition of Na-bound two halide exciton from singlet state causes 3 eV emission of CsI:Na. The capturing of Vk by Na + ion determines the scintillation pulse shape. Thermal liberation of Vk from VkA centers results in an inertial rise of the emission pulse in lightly activated CsI:Na and in a mono-exponential decay of the emission pulse in heavily activated CsI:Na. The value of thermal dissociation energy of VkA centers is 0.24 ± 0.01 eV, which was obtained from the temperature dependences of the emission decay time constant for CsI:2.810-3%Na and of the rise time constant for CsI:2.010-4%Na.
AB - This paper investigates the influence of activator concentration and temperature on the scintillation process in CsI:Na crystal which was excited by a pulsed electron beam (Eex = 0.25 MeV, t1/2 = 15 ns, W = 0.003...0.16 J/cm2) at temperature within 77-300 K. It has been established that the transition of Na-bound two halide exciton from singlet state causes 3 eV emission of CsI:Na. The capturing of Vk by Na + ion determines the scintillation pulse shape. Thermal liberation of Vk from VkA centers results in an inertial rise of the emission pulse in lightly activated CsI:Na and in a mono-exponential decay of the emission pulse in heavily activated CsI:Na. The value of thermal dissociation energy of VkA centers is 0.24 ± 0.01 eV, which was obtained from the temperature dependences of the emission decay time constant for CsI:2.810-3%Na and of the rise time constant for CsI:2.010-4%Na.
KW - Na-bound two halide exciton
KW - Recombination process
KW - Scintillation pulse shape
KW - Sodium-doped cesium iodide
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U2 - 10.1016/j.radmeas.2013.01.003
DO - 10.1016/j.radmeas.2013.01.003
M3 - Article
AN - SCOPUS:84877705748
VL - 51-52
SP - 13
EP - 17
JO - Radiation Measurements
JF - Radiation Measurements
SN - 1350-4487
ER -