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Pomiary 60Co w obiektach z żelazną matrycą

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Tymiński Z., Dziel T., Saganowski P., Kołakowska E., Listkowska A., Tymińska K., Żołądek P., Olech A.
Acta Societatis Metheoriticae Polonorum
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2016
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vol. 7
144-150
EN
Radioactive cobalt isotope 60Co is produced in neutron activation process of stable isotope 59Co by neutron capture reaction 59Co(n,g)60Co, in solar wind charge exchange 60Ni(n,p)60Co or in spallation process 62Ni(n,p2n)60Co. These processes are responsible for isotope 60Co production either in nuclear reactor on Earth or beyond – in stars and in meteorites (induced by cosmic rays). In this work the results of 60Co measurements in metal sources by gamma spectrometry laboratory are presented. A metal reference radioactive standards made up of steel cast with discs shaped geometries and different diameters have been tested in gamma-ray spectrometry measurement system. The reference activity concentrations of 60Co were in the range of (0.291±0.010) Bq·g–1 to (1.544±0.030) Bq·g–1. The mean minimal detectable activities (MDA) obtained by series of the 6 to 18 hours lasting measurements of described above standards with HPGe detectors carried out in NCBJ OR POLATOM were in the range of 6.1 mBq·g–1 to 8.5 mBq·g–1. The results correspond to the values of 60Co activity concentration measured in the iron meteorites with young terrestrial ages.
2
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15 lat obserwacji – wybrane spadki meteorytów rejestrowane w PFN w latach 2004–2019

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Tymiński Z., Żołądek P., Wiśniewski M., Stolarz M., Polakowski K., Myszkiewicz M., Zaręba P., Gawroński M. P., Suchodolski T., Olech A.
Acta Societatis Metheoriticae Polonorum
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2019
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vol. 10
160-167
EN
The Polish Fireball Network (PFN) associated in Comets and Meteors Workshop monitors the sky over Poland regularly for 15 years and registers the bright fireballs over the whole country (Olech 2006; Wiśniewski 2017). Every year we observe a few meteorite falls but due to weather conditions some data are not sufficient for proper strewnfield calculations. In the collaboration with the European Fireball Network the whole territory of Poland is monitored almost regardless of the weather. The publication describes the bolide phenomena characterized by distinctive meteorite falls, so the strewnfield indicated here should become the target of further exploration expeditions.
3
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Raport z poszukiwań meteorytów w ramach PFN w sezonie 2016/2017

81%
Tymiński Z., Żołądek P., Wiśniewski M., Stolarz M., Jaśkiewicz A., Myszkiewicz M., Gawroński M. P., Suchodolski T., Polakowski K., Zaręba P., Olech A.
Acta Societatis Metheoriticae Polonorum
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2018
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vol. 9
EN
The Meteorite Section was created in 2010 on demand of Polish Fireball Network (PFN) for the meteorite searching and investigation purposes. The main task of the Section is to find the meteorites dropped from bolides registered by the Polish Fireball Network. Each year, the PFN registers several meteorite falls within our country and meteorite strewnfield inspections must be carried out at least for the masses of above 300 g estimated with the PyFN software. Only last year the PFN organized several search campaigns. Two of them are presented in the publication.
4
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Raport z poszukiwań meteorytów w ramach PFN w sezonie 2016/2017

81%
Tymiński Z., Żołądek P., Wiśniewski M., Stolarz M., Jaśkiewicz A., Myszkiewicz M., Gawroński M. P., Suchodolski T., Polakowski K., Zaręba P., Olech A.
Acta Societatis Metheoriticae Polonorum
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2018
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vol. 9
158-163
EN
The Meteorite Section was created in 2010 on demand of Polish Fireball Network (PFN) for the meteorite searching and investigation purposes. The main task of the Section is to find the meteorites dropped from bolides registered by the Polish Fireball Network. Each year, the PFN registers several meteorite falls within our country and meteorite strewnfield inspections must be carried out at least for the masses of above 300 g estimated with the PyFN software. Only last year the PFN organized several search campaigns. Two of them are presented in the publication.
5
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Historia oraz stan obecny Polish Fireball Network

81%
Wiśniewski M., Żołądek P., Olech A., Tymiński Z., Maciejewski M., Raj A., Fietkiewicz K., Gozdalski M., Gawroński M. P., Suchodolski T., Myszkiewicz M., Stolarz M., Polakowski K.
Acta Societatis Metheoriticae Polonorum
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2018
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vol. 9
177-186
EN
The Polish Fireball Network (PFN) is a project to monitor regularly the sky over Poland in order to detect bright fireballs. In 2016 the 72 PFN cameras recorded 100 389 meteor events. Using these data and the UFOOrbit software 19 087 trajectories and orbits were calculated. In the following years we are planning intensive modernization of the PFN network including installation of dozens of new digital cameras.
PL
Polish Fireball Network (PFN) to projekt polegający na regularnym monitorowaniu nieba nad Polską w celu zaobserwowania jasnych meteorów i bolidów. W 2016 roku 72 kamery PFN zarejestrowały 100 389 meteorów. Za pomocą tych danych i oprogramowania UFOOrbit obliczono 19 087 trajektorie i orbity. W kolejnych latach planujemy intensywną modernizację sieci PFN, w tym instalację kilkudziesięciu nowych kamer cyfrowych.
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