Radionuclides in fly ash and bottom ash: improved characterization based on radiography and low energy gamma-ray spectrometry

Fuel ◽  
1998 ◽  
Vol 77 (4) ◽  
pp. 259-267 ◽  
Author(s):  
Robert A. Zielinski ◽  
James R. Budahn
Keyword(s):  
Fly Ash ◽  
Gamma Ray ◽  
Bottom Ash ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Energy Gamma

Non destructive and destructive dating by low energy gamma ray spectrometry

1995 ◽  
Vol 46 (6-7) ◽  
pp. 651-652
Author(s):  
M. Berrada ◽  
A. Choukri ◽  
T. El Khoukhi
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Energy Gamma ◽  
Non Destructive

scholarly journals Aktivitas NORM pada Sedimen Dasar di Perairan PLTU Tanjung Jati Jepara dan Kaitannya dengan Ukuran Butir Sedimen serta TOC

EKSPLORIUM ◽  
2019 ◽  
Vol 40 (2) ◽  
pp. 115
Author(s):  
Navila Bidasari Alviandini ◽  
Muslim Muslim ◽  
Wahyu Retno Prihatiningsih ◽  
Sri Yulina Wulandari
Keyword(s):  
Fly Ash ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Bottom Sediments ◽  
Activity Concentration ◽  
Gamma Ray ◽  
Bottom Ash ◽  
Radioactive Material ◽  
Gamma Ray Spectrometry ◽  
Purposive Sampling

ABSTRAKNORM (Naturally Occuring Radioactive Material) merupakan unsur radionuklida yang secara alami sudah ada dalam bumi dan kandungannya dapat meningkat dengan adanya kegiatan industri, seperti PLTU. Kegiatan PLTU menghasilkan bottom ash dan fly ash yang akan terbawa oleh angin kemudian masuk ke perairan dan mengendap pada sedimen dasar perairan. Penelitian ini bertujuan untuk mengetahui aktivitas NORM pada sedimen dasar terkait kegiatan PLTU Tanjung Jati, Jepara dan hubungannya dengan ukuran butir serta TOC (Total Organic Carbon). Pengambilan sampel dilakukan dengan metode purposive sampling. Pengukuran konsentrasi aktivitas NORM dilakukan menggunakan spektrometri sinar gama detektor HPGe, di Laboratorium Radioekologi Kelautan PTKMR-BATAN. Konsentrasi aktivitas NORM yang terdeteksi yaitu 40K berkisar 442,75–818,40 Bq.Kg-1, 232Th berkisar 99,19–212,34 Bq.Kg-1 dan 226Ra berkisar 42,42–77,77 Bq.Kg-1. Aktivitas NORM menunjukkan adanya hubungan dengan tekstur sedimen, tetapi tidak menunjukkan hubungan dengan kandungan Total Organic Carbon (TOC).ABSTRACTNORM (Naturally Occurring Radioactive Material) is a radionuclide element which naturally exists in the earth and its content can increased with the presence of industrial activities, such as the PLTU. The PLTU activities produce fly ash and bottom ash which will be carried away by the wind and then fall in the waters and settle on the bottom sediments of the waters. This study was aimed to determine the activity of NORM in bottom sediments related activities PLTU Tanjung Jati Jepara and its relationship with grain size and TOC (Total Organic Carbon). Sampling was conducted by purposive sampling method. NORM activity concentration measurements performed using gamma ray spectrometry HPGe detector, in Marine Radioecology Laboratory PTKMR-BATAN. NORM activity concentration detected is 40K ranged 442.75 to 818.40 Bq.Kg-1, 232Th ranged 99.19 to 212.34 Bq.Kg-1 and 226Ra ranged 42.42 to 77.77 Bq.Kg-1. NORM activity shows the relationship with sediment texture, but does not show a relationship with the composition of Total Organic Carbon (TOC).

Study of scattering effects in low-energy gamma-ray spectrometry

2008 ◽  
Vol 66 (6-7) ◽  
pp. 769-773 ◽  
Author(s):  
J. Plagnard ◽  
C. Hamon ◽  
M.C. Lépy
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Scattering Effects ◽  
Energy Gamma

scholarly journals Gamma-Ray Spectrometry of Galactic Sources in the Energy Range 0.2–3.0 MeV

1971 ◽  
Vol 41 ◽  
pp. 45-57 ◽  
Author(s):  
A Bui-Van ◽  
G. Vedrenne ◽  
P. Mandrou
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Signal To Noise Ratio ◽  
Crab Nebula ◽  
Low Energy ◽  
Gamma Ray Spectrometry ◽  
Angular Aperture ◽  
Energy Gamma ◽  
Galactic Sources ◽  
The Crab Nebula

A low energy gamma-ray telescope (0.2–3 MeV) has been studied in our laboratory. It is made up of an active honeycomb collimator of Nai(T1), with a geometrical angular aperture of 1.5°, and of a detector composed of 73 Nai(T1) sticks (0.5 cm diam.–5 cm length) incorporated in a plastic gabarit used in anticoincidence.The directivity of the telescope is obtained at low energy by the collimator, and at higher energy by the directivity which exists in the gamma-ray interaction through the Compton and photoelectric effects. The electrons emitted in these interactions which are not contained in the sticks of Nai(T1) are detected by the plastic anticoincidence scintillator. Only laboratory tests are presented here, for the study of the galactic gamma-rays, however, the system must subsequently be protected by a 4 cm thick anticoincidence well. In fact the detector directivity enables a great increase in the signal to noise ratio to be expected without greatly increasing the thickness of the shielding.According to the results obtained the estimation of the minimum exposure time for the ‘Crab Nebula’ would be about 2h30m to have a signal at 1 MeV with 2σ of confidence above the background.

C-SPRINT: a prototype Compton camera system for low energy gamma ray imaging

2002 ◽  
Author(s):  
J.W. LeBlanc ◽  
N.H. Clinthorne ◽  
C.-H. Hua ◽  
E. Nygard ◽  
W.L. Rogers ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Compton Camera ◽  
Camera System ◽  
Gamma Ray Imaging ◽  
Energy Gamma

scholarly journals Constraints on the late X-ray radiation from the low-energy gamma-ray burst of December 3, 2003: INTEGRAL data

2006 ◽  
Vol 32 (5) ◽  
pp. 297-301 ◽  
Author(s):  
S. Yu. Sazonov ◽  
A. A. Lutovinov ◽  
E. M. Churazov ◽  
R. A. Sunyaev
Keyword(s):  
Gamma Ray ◽  
Low Energy ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Energy Gamma ◽  
Integral Data
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