Detection of alpha particles with undoped poly (ethylene naphthalate)

Hidehito Nakamura*, Yoshiyuki Shirakawa, Hisashi Kitamura, Nobuhiro Sato, Sentaro Takahashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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 241Am 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 252Cf 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.

Original languageEnglish
Pages (from-to)6-9
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2014 Mar 1
Externally publishedYes


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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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