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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. ISSN 0854-5278

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Abstract

ABSTRAK PENENTUAN UNSUR KEL MIT DALAM CUPLIKAN LINGKUNGAN DENGAN METODA ANALISIS PENGAKTIPAN EUTRON. Pada pcnentu.m konsentr;1si nuklida umur paruh pcndck di dalam cuplikan lingkungan dcng.m metoda analisis pcng,1ktipan neutron (APN), sering tcljadi kchil.ulgan cacal1 Ylli1g discba kan olch kcccpat.m cacah yang til1ggi. Suatu sirkuit clcktrik '- Pile-Up Re.icctor (PUR) diinstalasikan ke dalam pcllcac,ulan nuklida umur paruh pcndck dcngan spcktromctcr sin.1f-y sebagai koreksi terhada kehilangan nilai cacah Cupliklli1 diiradiasi sclama 30 -60 detik pada fluks neutron 3,5 x 10'~.cm-1s. I, kcmudi,m didingillkan selama 120 detik d.m dilakuklli1 pencac(1l1an selan1<11 80 detik dengan mengg mak,m sistem ini. Konsentn1sin uklida di bcrbagai cllplikan lingkungan mempunyai basil anal is is y,mg erbcda, Icbih prcsisi dan ,1kurdt, dimana harga pengukuran dari ,malisis dengan sistcm PUR 30% lebih es(1f dari pada hasil pen!,'llkuran dcng.m metode spcktromctri sinar-y konvensional, ABSTRACT DETERMINATION OF SORT-LIVED TRACE ELEMENTS IN ENVIRONMENTAL SAMPLES BY NEUTRON A TIV A TION ANALYSIS. Concentrationo f a shoI1-livedt racee lements in environmentalS amplesw ere etem1inedb y neutrona ctivationa nalysis, a counting loss often occurs due to the high counting rate. Pile -Up Rejector (PUR) electric circuit was installed in counting a shoI1-livedt race elementsb y a y- y spectrometeirn ordert o correcta countingl oss. The samplesw ere irradiated for 30 -60 seconds t neutron flux of 3.5 x lOI2n.cm-2.s,. 1th en the samplesc ooled for 120 seconds and counted for 180 s conds using this system. The nueclides concentration in the ,.arieties environmental sanlples have a difference anlysis results, was more accurate and precise, which the measured results would be 300;( more higher by PUR system than the result would be counted using a conventional y-ray spectrometry ethod..

Item Type: Article
Subjects: Keselamatan dan Keamanan Nuklir > Keselamatan Lingkungan > Keselamatan Radiasi Lingkungan
Divisions: Pusat Reaktor Serba Guna
Depositing User: EDITOR PRSG BATAN
Date Deposited: 31 Jul 2018 07:32
Last Modified: 16 Nov 2018 02:16
URI: http://repo-nkm.batan.go.id/id/eprint/3568

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