Advanced simulation code for alpha spectrometry

Siiskonen, T.; Pöllänen, R

doi:10.1016/j.nima.2005.05.045

Cited by 55 publications

(21 citation statements)

References 21 publications

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“…Figure 4 shows the detection efficiency of the spectrometer, obtained using 239 Pu (5156.6 keV), as a function of the distance between the source and the surface of the detector, measured without a collimator. The measured detection efficiency is in good agreement with the calculated value obtained by the AASI code for the simulation of the energy spectrum in the α spectrometer [6]. This quantity was also calculated using the MCNPX code, where the real sample-detector geometry was specified and 3183-keV α particles were taken with isotropic angular and uniform spatial distributions throughout the volume of each experimental sample.…”

Section: Irradiation and Measurementssupporting

confidence: 77%

Measurement and simulation of the cross sections for the production of 148Gd in thin natW and 181Ta targets irradiated with 0.4- to 2.6-GeV protons

et al. 2011

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Abstract-The cross sections for the production of148 Gd in nat W and 181 Ta targets irradiated by 0.4-, 0.6-, 0.8-, 1.2-, 1.6-, and 2.6-GeV protons at the ITEP accelerator complex have been measured by direct α spectrometry without chemical separation. The experimental data have been compared with the data obtained at other laboratories and with the theoretical simulations of the yields on the basis of the BERTINI, ISABEL, CEM03.02, INCL4.2, INCL4.5, CASCADE07, and PHITS codes.

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Section: Irradiation and Measurementssupporting

confidence: 77%

Measurement and simulation of the cross sections for the production of 148Gd in thin natW and 181Ta targets irradiated with 0.4- to 2.6-GeV protons

et al. 2011

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“…Measurements of α-particles outside a controlled vacuum are typically more limited by the interactions with air molecules and the resulting straggling than by the accuracy and resolution of the detector. In order to match detector pulse histograms with the correct energy spectrum of the reference source, the freely available simulation software AASI is used [28]. Figure 4b shows a simulated spectrum of the mixed reference source reproducing the conditions during the measurement depicted in Figure 4a.…”

Section: Resultsmentioning

confidence: 99%

Smartphone and Tablet-Based Sensing of Environmental Radioactivity: Mobile Low-Cost Measurements for Monitoring, Citizen Science, and Educational Purposes

Keller

Benoit

Müller

et al. 2019

Sensors

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Sensors for environmental radioactivity based on two novel setups using photodiodes, on the one hand, and an advanced tablet-based hybrid pixel detector, on the other hand, are presented. Measurements of four kinds of terrestrial and every-day radiation sources are carried out: Airborne radon, a mineral containing traces of uranium, edible potassium salt, and an old radium watch. These measurements permit comparisons between different types of ambient radioactive sources and enable environmental monitoring. Available data comprise discrimination between α- and β−-particles in an energy range of 33 keV to 8 MeV and under ambient air conditions. The diode-based sensor is particularly useful in portable applications since it is small and sturdy with little power consumption. It can be directly connected to a smartphone via the headset socket. For its development, the low-cost silicon positive-intrinsic-negative (PIN) diodes BPX61 and BPW34 have been characterised with capacitance versus voltage (C-V) curves. Physical detection limits for ionising radiation are discussed based on obtained depletion layer width: (50±8) sans-serifμnormalm at 8 V. The mobile and low-cost character of these sensors, as alternatives to Geiger counters or other advanced equipment, allows for a widespread use by individuals and citizen science groups for environmental and health protection purposes, or in educational settings. Source code and hardware design files are released under open source licenses with this publication.

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“…The geometric detection efficiency can be calculated for the uncollimated case using the AASI program (Siiskonen and Pöllänen 2005) giving ɛ geom = 0.185 ± 0.004. Since the activity per unit area of the 241 Am source used here in the testing was 11.8 Bq cm −2 , the number of the detected counts during the data acquisition time of 30,744 s (Table 1) should be close to 1.98 Â 10 6 counts.…”

Section: Discussionmentioning

confidence: 99%

Novel Equipment for In Situ Alpha Spectrometry with Good Energy Resolution

Pöllänen¹,

Turunen²,

Karhunen³

et al. 2015

Health Physics

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An approach for in situ alpha spectrometry that allows one to measure the spectra with good energy resolution at ambient air pressure has been developed recently. Here, novel equipment is introduced for in situ measurements. Neither vacuum pumps nor radiochemical sample processing are necessary. Flat and smooth surfaces are ideal sources provided that the radionuclide contamination represents a thin layer on the surface. Other sources, such as air filters or evaporation residues, are also possible. Alpha particle collimation is used to obtain good energy resolution, but the equipment can also be used without collimation. An estimation of the detection efficiency with and without collimation is given using an extended area source containing 241Am.

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Advanced simulation code for alpha spectrometry

Cited by 55 publications

References 21 publications

Measurement and simulation of the cross sections for the production of 148Gd in thin natW and 181Ta targets irradiated with 0.4- to 2.6-GeV protons

Measurement and simulation of the cross sections for the production of 148Gd in thin natW and 181Ta targets irradiated with 0.4- to 2.6-GeV protons

Smartphone and Tablet-Based Sensing of Environmental Radioactivity: Mobile Low-Cost Measurements for Monitoring, Citizen Science, and Educational Purposes

Novel Equipment for In Situ Alpha Spectrometry with Good Energy Resolution

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