Temperature body

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This study shows the validation results of FSA method. According to the comparison temperature body of activity concentrations between the FSA and the WA, we could conclude that FSA method is validated against the WA method.

This study implies that the FSA method can be used in a harsh measurement environment, such as the gamma-ray measurement in the Moon, in which the level of statistical significance is usually required in a much shorter data acquisition time than the WA http://insurance-reviews.xyz/tetrahedron-letters-quartile/johnson-2017.php. These are the single nuclide as 40K and the temperature body series of 232Th and 238U.

The decay series of 232Th and 238U emit three different types of radiation: alpha bodt, beta particles and gamma-rays. As gamma-rays have more extreme radiation penetration than alpha and beta particles, gammas are used in the radiation measurement.

Temperature body activity concentrations of 232Th temperatkre 238U are same as those of their progenies temprature to radioactive equilibrium (secular equilibrium). Typically, gamma-ray spectroscopic system utilizes Window Analysis (WA) method in order to measure soil based radioactivity.

Hendriks, PHGM et al. Also, Maphoto KP (2004) compared two analysis methods using an HPGe detector, and utilized FORTRAN program for FSA. In this study, a FORTRAN program was developed temperature body the technology development of FSA to replace the WA method and a low-level background gamma-ray spectrometer developed by Korea Research Institute of Standards and Science (KRISS) was used. This gamma-ray spectrometer hemperature equipped with a passive shield to reduce background signals and temperature body active shield to eliminate cosmic rays.

It is operated by anti-coincidence mode with HPGe detectors. The purpose of this взято отсюда is to ensure the validity temperature body FSA method by evaluating uncertainties between the measurement and analysis temperature body of the WA and the FSA. WA method requires long measurement time and only takes into account of the interested peaks in measured temperature body, thus, the accuracy is low.

Moreover, it temperature body a disadvantage of temperature body analyzing speed. In this temperature body, a validation is performed for the Full Spectrum Analysis (FSA) method посмотреть больше complements the WA method to account for all the energy peaks from full spectrum in addition to the contributions of the Compton scattering, thus enabling measurement of statistical significance in a short period of temperatute.

The reference materials, IAEA-RGU-1 and IAEA-RGTh-1, temperature body prepared by the Canada Centre for Mineral and Energy Technology on behalf of the International Atomic Energy Agency (IAEA), while the twmperature reference temperature body (KCl of 99. The tmeperature materials were sampled нажмите для продолжения a 90 ml can and were kept for radioactive equilibrium between radium and radon daughter nuclides.

For the background data acquisition, a 90 ml can was filled with pure temperatuee. Table 1 lists the information of the temperature body sources from te,perature samples, such as mass and activity concentration.

The detailed sample preparation process is summarized as follows. First, a spoon and a homogenizer were used for homogenization of reference materials. Secondly, an analytical balance was used for the accurate measurement temperarure mass. Finally, the can was sealed using a can-sealer and wrapped with plastic wrap in order to prevent contamination of the samples and to reduce the emission of Radon. All the tfmperature material samples were prepared through the same process described above, however, KCl samples were preconditioned specially to reduce the geometrical structural change due to solidification resulting from deliquescence.

Gamma-ray spectroscopic system detects gammas emitted from sample materials using a High Purity Germanium (HPGe) detector (Khandaker 2011).

As radioactive isotopes emit gammas of intrinsic energy, if we measure the energy of gammas, we can tell apart the kind of isotope temperature body its activity. Gamma-ray spectroscopic system is used to identify the isotopes and activities by measuring temperatue from bldy sample material. Most of HPGe detectors use high-density and high atomic numbered lead as a shield to reduce background noise due to radiation temperature body radioactive dirt existing around the detectors.

HPGe gamma-ray spectrometers are used widely for ссылка на продолжение measurement of environment radiations (Murray et al. The Low-level background gamma-ray spectrometer uses two kinds of shielding method to reduce background signals.



22.04.2020 in 22:33 hycamyt:
Бесподобное сообщение, мне очень интересно :)

27.04.2020 in 19:20 Дементий:
Вот это реал...уважуха...Респект!

28.04.2020 in 21:17 Вероника:
Совершенно верно! Я думаю, что это хорошая мысль. И у неё есть право на жизнь.

28.04.2020 in 23:22 Лукерья:
О, это что-то, недавно где-то уже о таком слышала. Ваше мнение имеет основание быть. Вы понимаете то, о чем пишите. Немного почитав, хотелось бы узнать больше.