- 作者: 江祥輝; 蔡榮鍠; 陳泰郎
- 作者服務機構: 國立清華大學核子工程系; 國立清華大學原子科學研究所
- 中文摘要: 利用 4.80 × 4.65公分的 NE-213 液態有機閃爍偵檢器,而以穿零定時的脈形鑑別法測量中子及伽馬射線混合場域下的伽馬射線能譜。同時以伊利諾伽馬響應矩陣及 FORIST 展開程式展開所測的脈高能譜。由測得鈉-24、鈽-鈹和鉲-252等標準射源之伽馬射線能譜,顯示本偵測系統對於純伽馬射線場或混合場域之伽馬射線能譜測量準確有效。基於此,乃利用此套偵測系統測量清華水池式反應器 E-1 束道之伽馬射線能譜,能量範圍由 1.0~11.5 MeV。
- 英文摘要: A 4.80 x 4.65 cm NE-213 liquid scintillationdetector has been used to measure the gamma-ray spectrum in a mixed radiation field ofneutrons and gamma-rays. The cross-over timingmethod of pulse shape discrimination wasused to discriminate against neutronevents. Themeasured pulse height spectra were unfoldedusing the current version of FORIST code incoupled with the Illinois gamma-ray responsematrix. The gamma-ray spectra of Na, Pu-Be,and C sources were measured to verify thespectrometry system. The established system wasthen used to measure the gamma-ray spectrumfrom 1 to 11.5 MeV at the E-1 beam port inTHOR.
- 中文關鍵字: --
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