Detection of alpha particles with undoped poly (ethylene naphthalate)

作者：Nakamura Hidehito^*; Shirakawa Yoshiyuki; Kitamura Hisashi; Sato Nobuhiro; Takahashi Sentaro

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2014, 739: 6-9.

DOI：10.1016/J.nima.2013.12.021

• Poly (ethylene naphthalate)
• Aromatic ring polymer
• Refractive index
• Light yield
• Alpha response

There has been recent interest in the use of undoped, aromatic-ring polymers as organic scintillation materials for radiation detectors. Here, we characterise the response of poly (ethylene naphthalate) (PEN) to alpha particles. The energy response to 5486 keV alpha particles emitted from Am-241 was 554 +/- 45 keV electron equivalents (keVee), with an energy resolution of 11.2 +/- 0.1%. The energy response to 6118 keV alpha particles emitted from Cf-252 was 618 +/- 45 keVee, with a resolution of 8.8 +/- 0.1%. It is also important to characterise the refractive index because it determines how efficiently light propagates in scintillation materials to the photodetector. By taking into account the PEN emission spectrum, it was revealed that its effective refractive index was 1.70. Overall, the results indicate that PEN has potential as a scintillation material for the detection of alpha particles.

• 出版日期2014-3-1