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PENENTUAN UNSUR KELUMIT UMUR PARO PENDEK DALAM CUPLIKAN LINGKUNGAN DENGAN METODA ANALISIS PENGAKTIPAN NEUTRON

Sri Wardani, SW and Sihombing, Edison and Amir Hamzah, AH and Rohidi, Rohidi and Putut Hery Setiawan, PHS and Saleh Hartaman, SH and Jaka Iman, JI (1998) PENENTUAN UNSUR KELUMIT UMUR PARO PENDEK DALAM CUPLIKAN LINGKUNGAN DENGAN METODA ANALISIS PENGAKTIPAN NEUTRON. PROSIDING SEMINAR HASIL PENELITIAN PRSG. pp. 333-340. ISSN 0854-5278

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Abstract

ABSTRAK PENENTUAN UNSUR KELUMIT DALAM CUPLIKAN LINGKUNGAN DENGAN METODA ANALISIS PENGAKTIPAN NEUTRON. Pada pcnentu:m konsentrnsi nuklida umur pamh pcndck di dalam cuplikan lingkung:m dcng,m metoda analisis pcng,lktipan neutron (APN), sering tcljadi kehil,ulgan cacall yang disebabk:m olch kccepat:m CilCiUyl ang tulggi. Suatu sirkuit clcktrik ., Pile-Up Re.icctor (PUR)" diinstalasik:m ke dalam pencac:1l1an uklida umurpamh pcndck dengan spcktromcter sin:tr-y sebagai korcksi tcrhadap kehilaJlgan nilai CiIC:lh CuplikaJl dimldiasi sclama 30 -60 dctik pada fluks neutron 3,5 x 101~.cm-1s:1, kcmudi,ul didinginkan Selantil 120 detik d,m dilakukiul pencacallan selanm 180 detik dengan menggunak:m sistem ini. Konsentnlsi nuklida di berbagai cuplikan lingkung:m mcmpunyai hasil analisis y:mg berbeda , Icbih prcsisi dan akurJt, dim:ma harga pcngukuran dari :malisis deng:ul sistem PUR 30% lebih bes,tr dari pada hasil pCnh'llkur.m dcng:m metode spcktrometri sinar-, konvensional, ABSTRACT DETERMINATION OF SHORT-LIVED TRACE ELEMENTS IN ENVIRONMENTAL SAMPLES BY NEUTRON ACTIVATION ANALYSIS. Concentrationo f a shon-lived trace elements in environmental samples were detennined by neutron activation analysis, a counting loss often occurs due to the high counting rate. A Pile -Up Rejector (PUR) electric circuit was installed in counting a shon-lived trace elementsb y a y-ray spectrometeirn ordert o correcta counting loss. The samples" .ere irradiated for 30 -60 secondsa t neutron flux of 3.5 x 1012n.cm-2.,s -th1e n the samplesc ooled for 120 seconds and counted for 180 seconds using this system. The nueclides concentration in the varieties environmental samples have a difference anlysis results, was more accurate and precise, which the measured results ,vould be 30% more higher by PUR system than the result would be counted using a conventionaly -ray spectrometrmy ethod..

Item Type: Article
Subjects: Reaktor Nuklir > Pemanfaatan Reaktor > Eksperimen Reaktor
Divisions: Pusat Reaktor Serba Guna
Depositing User: EDITOR PRSG BATAN
Date Deposited: 31 Jul 2018 03:52
Last Modified: 31 Jul 2018 03:52
URI: http://repo-nkm.batan.go.id/id/eprint/3561

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