Publikacje w czasopismach naukowych
http://rifj.ifj.edu.pl/handle/item/4
2024-03-28T08:49:47Z
2024-03-28T08:49:47Z
Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb
Bottoni, S
Gamba, E. R.
De Gregorio, G.
Gargano, A.
Leoni, S.
Fornal, B.
Brancadori, N.
Ciconali, G.
Crespi, F. C. L.
Cieplicka-Oryńczak, N.
Iskra, Ł. W.
Colombi, G.
Kim, Y. H.
Köster, U.
Michelagnoli, C.
Dunkel, F.
Esmaylzadeh, A.
Gerhard, L.
Jolie, J.
Knafla, L.
Ley, M.
Régis, J.-M.
Schomaker, K.
Sferrazza, M.
http://rifj.ifj.edu.pl/handle/item/407
2023-07-28T10:24:03Z
2023-01-26T00:00:00Z
Testing the predictive power of realistic shell model calculations via lifetime measurement of the 11/2+ state in 131Sb
Bottoni, S; Gamba, E. R.; De Gregorio, G.; Gargano, A.; Leoni, S.; Fornal, B.; Brancadori, N.; Ciconali, G.; Crespi, F. C. L.; Cieplicka-Oryńczak, N.; Iskra, Ł. W.; Colombi, G.; Kim, Y. H.; Köster, U.; Michelagnoli, C.; Dunkel, F.; Esmaylzadeh, A.; Gerhard, L.; Jolie, J.; Knafla, L.; Ley, M.; Régis, J.-M.; Schomaker, K.; Sferrazza, M.
The lifetime of the 11/2+
1 state in the 131Sb nucleus was measured at the LOHENGRIN spectrometer of the
Institut Laue-Langevin via neutron-induced fission of 235U using γ -ray fast-timing techniques. The obtained
value of T1/2 = 3 (2) ps, at the edge of the sensitivity of the experimental method, is the first result for the
11/2+
1 state half-life in neutron-rich Sb isotopes. The corresponding quadrupole reduced transition probability
to the ground state is B(E2) = 1.4+1.5
−0.6W.u., indicating a noncollective nature of this state. Realistic shell-model
calculations performed in a large valence space reproduce well the experimental value and point to a dominant
2+(130Sn) ⊗ πg7/2 configuration for the 11/2+
1 state, as expected in a weak-coupling scenario. At the same time,
the sum of the quadrupole strength of the multiplet states is predicted to exceed the one of the 130Sn core as a
consequence of the equal contribution of the proton and the proton-neutron quadrupole matrix elements, pointing
to possible development of collectivity already in the close neighborhood of 132Sn.
2023-01-26T00:00:00Z
Study of radioluminescence in LiMgPO4 doped with Tb, B and Tm
Sas-Bieniarz, Anna
Marczewska, Barbara
Bilski, Paweł
Gieszczyk, Wojciech
Klosowski, Mariusz
http://rifj.ifj.edu.pl/handle/item/352
2022-04-22T07:28:09Z
2020-01-01T00:00:00Z
Study of radioluminescence in LiMgPO4 doped with Tb, B and Tm
Sas-Bieniarz, Anna; Marczewska, Barbara; Bilski, Paweł; Gieszczyk, Wojciech; Klosowski, Mariusz
Lithium magnesium phosphate (LiMgPO4, called LMP) crystals doped with different concentration of Tb, B and Tm were tested in regard to their radioluminescence emitted during irradiation. LMP crystals were grown with a micro-pulling down method as rods at IFJ PAN. The samples in the form of the thin slices were very sensitive to the ionizing radiation. Differently doped LMP samples were tested in a fiber optic measurement system (called PORTOS) which was constructed and adopted to the specific spectral properties of LMP. The LMP detector placed at the end of 15 m fiber connected to the PORTOS device was tested with gamma rays emitted from Co-60 Theratron 780E as well as with a Cs-137 source in a Laboratory for Calibration of Radiation Protection In- struments at IFJ PAN. RL signal was roughly proportional to the dose rates in the wide range of the dose rates. The highest RL signal was recorded for LMP crystals doped with 0.8 mol% of Tb as well as doped with 0.8 mol% Tm. The radioluminescence signal was discussed in regard to the thermoluminescence (TL) glow curves and optically stimulated luminescence (OSL) decay curves for 14 differently doped LMP crystals.
A. Sas-Bieniarz, B. Marczewska, P. Bilski, W. Gieszczyk, M. Kłosowski,
Study of radioluminescence in LiMgPO4 doped with Tb, B and Tm,
Radiat. Meas., 136 (2020) 106408, doi: 10.1016/j.radmeas.2020.106408
2020-01-01T00:00:00Z
OSL and RL of LiMgPO4 crystals doped with rare earth elements
Marczewska, Barbara
Sas-Bieniarz, Anna
Bilski, Paweł
Gieszczyk, Wojciech
Kłosowski, Mariusz
Sądel, Marcin
http://rifj.ifj.edu.pl/handle/item/351
2022-04-22T07:17:52Z
2019-01-01T00:00:00Z
OSL and RL of LiMgPO4 crystals doped with rare earth elements
Marczewska, Barbara; Sas-Bieniarz, Anna; Bilski, Paweł; Gieszczyk, Wojciech; Kłosowski, Mariusz; Sądel, Marcin
LiMgPO4 (LMP) doped with a combination of Tb, B, Eu, Er, Gd or Tm activators in form of the crystals grown by micro-pulling down process (MPD) was examined as optically stimulated luminescence detectors using continues wave and time-resolved modes (CW and TR-OSL) as well as radioluminescence (RL) under X-ray tube irradiation. The RL-OSL measurements were performed using a HELIOS-3 OSL reader with a 460 nm diode light stimulation and 240–400 nm emission wavelength range for signal recording and compared with CW-OSL measured by Risoe reader. In TR-OSL mode the most sensitive samples were the crystals doped with Tb, B and doped with Tb, B, Er, in CW-mode the highest signal was recorded for crystal doped with Tb, B, Gd. The linear dose response was observed in the range from 0.5 to 10 Gy. RL signals measured for the dose rates of 62 mGy/min of X-rays was very high for all investigated crystals, especially for the crystal doped with Tm and Tb, B. The highest RL signal was observed for the crystal doped with 1.2mol% of Tm.
B. Marczewska, A. Sas-Bieniarz, P. Bilski, W. Gieszczyk, M. Kłosowski, M. Sądel,
OSL and RL of LiMgPO4 crystals doped with rare earth elements,
Radiat. Meas., 129 (2019) 106205, doi: 10.1016/j.radmeas.2019.106205
2019-01-01T00:00:00Z
Popular Medicines as Radiation Sensors
Mrozik, Anna
Bilski, Paweł
http://rifj.ifj.edu.pl/handle/item/347
2021-12-02T13:26:10Z
2021-01-01T00:00:00Z
Popular Medicines as Radiation Sensors
Mrozik, Anna; Bilski, Paweł
During an uncontrolled release of radiation, it is highly unlikely that members of the public will be equipped with personal radiation dose monitors. In preparation for such a situation various personal objects are being investigated as emergency dosimeters. The already developed methods are not satisfactory, as they are time-consuming or require destruction of things valuable for victims.
Here we show, that common pharmaceuticals, which frequently may be found e.g. in personal bags, are the perfect candidate as radiation sensors in emergencies. We investigated several over-the-counter medicines for occurrence of the optically stimulated luminescence phenomenon and found that all of them exhibit strong luminescence signal following exposure to ionizing radiation.
Its intensity increases linearly with the absorbed dose. The highest sensitivity was shown by the popular painkillers based on ibuprofen and paracetamol. The intensity of their luminescence signal was found to enable measurement of doses well below 1 Gy, what is sufficient for application in emergency dosimetry. Pharmaceuticals are also free of all disadvantages of other emergency dosimeters: their composition is standardized, sampling is immediate, the unit value is usually negligible. We expect our results to be a starting point for broader investigations of various medicines, which should provide a perfect tool for emergency dosimetry.
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A. Mrozik, P. Bilski. Popular Medicines as Radiation Sensors. IEEE Sensors Journal 21 (2021), 16637-16642, DOI: 10.1109/JSEN.2021.3082285
https://ieeexplore.ieee.org/document/9436773
2021-01-01T00:00:00Z