Autor: Choinski, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of Heavy Ion Irradiation on the Magnetic Properties of CuGeO$\text{}_{3}$
Autorzy:: Gładczuk, L.
Mosiniewicz-Szablewska, E.
Szymczak, R.
Baran, M.
Dąbkowska, H. A.
Choiński, J.
Czosnyka, T.
Szymczak, H.
Powiązania:: https://bibliotekanauki.pl/articles/2013715.pdf
Data publikacji:: 2000-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.30.Kz
75.50.Ee
76.30.Da
Opis:: The influence of heavy ion irradiation on the magnetic properties of the spin-Peierls compound CuGeO$\text{}_{3}$ has been investigated by means of the electron paramagnetic resonance, the spontaneous magnetization, and the low field ac susceptibility. The measurements were performed on the CuGeO$\text{}_{3}$ single crystals before and after irradiation with 80 MeV oxygen ions in the wide temperature range of 2-300 K. It was found that the irradiation induced an increase in the EPR signal intensity, magnetization, and susceptibility of this material. It was also shown that the irradiation does not lead to a decrease in the spin-Peierls transition temperature and to the formation of an antiferromagnetic phase which is expected to appear in disordered spin-Peierls systems.
Źródło:: Acta Physica Polonica A; 2000, 97, 5; 871-874
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Warsaw cyclotron: present status and plans of development
Autorzy:: Choiński, J.
Czosnyka, T.
Dworski, J.
Jastrzębski, J.
Kownacki, J.
Kulczycka, E.
Kurzyński, J.
Miszczak, J.
Stolarz, A.
Sudlitz, K.
Sura, J.
Zemło, L.
Powiązania:: https://bibliotekanauki.pl/articles/148689.pdf
Data publikacji:: 2003
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: accelerators physics
cyclotrons
application of cyclotron in nuclear
atomic and solid state physics
Opis:: The operation of the Warsaw heavy ion cyclotron is presented. Technical solutions adopted were intended to accommodate the needs of different groups of users requiring a wide scope of beam species and energies. The accelerating structure of the machine, with two 45 degree dees, allows for the operation in the harmonics modes from 2 to 6 (first harmonic mode is also possible, although the acceleration of protons and deuterons is currently not within the scope of interest). Available energies range from 2 to about 10 MeV/amu due to the wide range of the stripping extraction system. Development of the multiturn stripping extraction technique was necessary to achieve the flexibility in energy variation, otherwise not reachable due to the highly saturated iron structure, which makes impossible the change of magnetic field and radio-frequency within the desirable limits. At present, the cyclotron, equipped with the ECR ion source, is capable of delivering ion beams from gaseous media up to Ar. Available ion beam species, their energies and intensities obtained up-to-date are shown. An overview of the experiments performed on the Warsaw cyclotron, including basic nuclear physics research, solid state physics and materials science, is intended to demonstrate the potential of the facility. The efficiency of the cyclotron and the ion beam line optics is discussed, as well as the plans for the future upgrade of the cyclotron and its infrastructure.
Źródło:: Nukleonika; 2003, 48,suppl.2; 109-115
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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