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All Journal Widyanuklida Jurnal Sapa Laut Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal DISPROTEK Jurnal Jatiswara Khatulistiwa: Jurnal Ilmu Pendidikan Lontara Abdimas : Jurnal Pengabdian kepada Masyarakat Ronggolawe Fisheries and Marine Science Journal Semarang Law Review Journal Community Service Consortium Jurnal Penelitian Hukum Indonesia (J-PeHI) Technological Pedagogical Content Knowledge
Muhammad Zainuddin
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Religion Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Public Health Social Sciences Other

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Journal : Widyanuklida

 1 
Experiments of Pulse-Shape Discrimination Technique of Alpha- and Beta (X, gamma)-Particles with Uses of a Phoswich and a CsI(Tl) Scintillation Detectors Takao Tojo; Muhammad Zainuddin; Widodo Soemadi
Widyanuklida Widyanuklida Volume 3 Nomor 1, Februari 2000
Publisher : BATAN

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ABSTRACT A phoswich or sandwich-type scintillation detector consisted of a thin layer of ZnS(Ag) and a plate of NE 102A plastic scintillator and a single crystal-type CsI(Tl) scintillation detector have been applied to differentiate alpha- and beta (X, gamma)- particles by means of pulse shape discrimination (PSD) technique. In this experiment, rise time distributions of alpha- and beta-particles have been measured with uses of a couple of sources of 241Am and 90Sr (90Y) and a 93.3% enriched uranium-aluminum alloy. Rise time resolution of the PSD spectrometer has been measured as 8.8ns ± 1.2% in terms of FWHM (FWTM: l6.3ns), which has been measured with a pulse generator. The most probable rise times of ZnS(Ag)/NE 102A detector have been obtained as 1.473µs ± 0.3% with the FWHM of 40ns for alpha-particles (ZnS(Ag)) and as 32.2ns ± 4.8% with the FWHM of 18ns for beta (X, gamma)-particles (NE l02A). The most probable rise time of the CsI(Tl) detector has been determined as 1.288µs ± 0.l% with the FWHM of 54ns for alpha-particles and as 1.435µs ± 0.l% with the FWHM of 44ns for beta (X, gamma)-particles. It has been clarified that the PSD system equipped with the ZnS(Ag)/NE 102A and the CsI(Tl) detectors gives clearly differentiated count rates and spectra of alpha- and beta (X, gamma)-particles, and application of the PSD system to, for example, screening-out of the radwastes contaminated with alpha-emitters is expected to be very effective. 
Construction of a Ge-BGO Compton Suppression Gamma-ray Spectrometer and Its Application to Environmental Samples. Part 1: The System of the Spectrometer and Its Basic Performance Takao Tojo; Muhammad Zainuddin; Widodo Soemadi
Widyanuklida Widyanuklida, Volume 2 Nomor 1, Februari 1999
Publisher : BATAN

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ABSTRACT In order to develop a very high sensitive Ge gamma-ray spectrometer, a Compton suppression gamma-ray spectrometer with a BGO guard detector system has been constructed. The BGO detector system detects 88% of the gamma-rays from 60Co that are committing to the principle of the suppression system. Peak-to-Compton ratio for the 661 keV gamma-rays from 137Cs has been improved from 128 to 786 with the Compton suppression spectroscopy. By the development of the spectrometer the minimum acceptable radioactivity of 137Cs has been improved from 0.091 Bq to 0.044 Bq with the coeficient of variation of 30% and measurement time of 8 hours. ABSTRAK Untuk mengembangkan spektrometer sinar-X Ge dengan kepekaan yang sangat tinggi, telah dibuat sebuah sistem spektrometer sinar-X penindas Compton dengan menggunakan detektor pelindung BGO. Sistem detektor BGO mendeteksi 88%. sinar gamma dari 60Co yang digunakan dalam prinsip sistem penindas. Peak-to-Compton ratio untuk sinar gamma berenergi 661 keV dari 137CS telah diperbaiki dari 128 menjadi 786 dengan spektroskopi penindas Compton. Melalui pengembangan spektrometer ini radioaktivitas 137Cs minimum yang dapat diterima meningkat dari 0.091 Bq menjadi 0.044 Bq dengan koefisien variasi 30%. dan waktu pengukuran 8 jam.  
Co-Authors Ali Ridlo Habib Nur Hamsyah Insih Wilujeng Intan Permatasari Jumiati Jumiati Miftachul Munir Muhamad Rahadian Akbar Muhammad Rosyihuddin Muslihan Muslihan Rielia Bachriani RINI PRAMESTI Sri Rahmaningsih suyanto yanto yanto Takao Tojo Widodo Soemadi Wilis Ari Setyati Yuyun Suprapti Zakki Mubarok