Zobrazeno 1 - 10
of 417
pro vyhledávání: '"Gulyás J"'
Autor:
Firak D. S., Krasznahorkay A. J., Csatlós M., Csige L., Gulyás J., Koszta M., Szihalmi B., Timár J., Nagy Á., Sas N. J., Krasznahorkay A.
Publikováno v:
EPJ Web of Conferences, Vol 232, p 04005 (2020)
In a 2016 paper, an anomaly in the internal pair creation on the M1 transition depopulating the 18.15 MeV isoscalar 1+ state on 8Be was observed. This could be explained by the creation and subsequent decay of a new boson, with mass mXc2 = 16.70 MeV.
Externí odkaz:
https://doaj.org/article/3fd175e0b3834bd5b7c38de8ee52598b
Autor:
Krasznahorkay, A. J., Krasznahorkay, A., Begala, M., Csatlós, M., Csige, L., Gulyás, J., Krakó, A., Timár, J., Rajta, I., Vajda, I., Sas, N. J.
Employing the $^{11}$B(p,$\gamma$)$^{12}$C nuclear reaction, the angular correlation of $e^+e^-$ pairs was investigated in the angular range of $40^\circ\Theta\leq 175^\circ$ for five different proton energies between E$_p$ = 1.50 - 2.50 MeV. At smal
Externí odkaz:
http://arxiv.org/abs/2209.10795
Autor:
Sas, N. J., Krasznahorkay, A. J., Csatlós, M., Gulyás, J., Kertész, B., Krasznahorkay, A., Molnár, J., Rajta, I., Timár, J., Vajda, I., Harakeh, M. N.
Angular correlation spectra of $e^+e^-$ pairs produced in the $^{7}$Li($p$,$\gamma$)$^{8}$Be nuclear reaction have been studied at the sharp $E_p$= 441 keV resonance as well as at $E_p$= 650 keV, 800 keV and 1100 keV proton beam energies. The spectra
Externí odkaz:
http://arxiv.org/abs/2205.07744
Autor:
Krasznahorkay A.J., Csatlós M., Csige L., Gulyás J., Hunyadi M., Ketel T.J., Krasznahorkay A., Kuti I., Nagy Á., Nyakó B.M., Sas N., Timár J., Vajda I.
Publikováno v:
EPJ Web of Conferences, Vol 137, p 08010 (2017)
Electron-positron angular correlations were remeasured for the 17.6 MeV (Jπ = 1+ → 0+) ground state transition in 8Be using an improved setup compared to the one we used previously. Significant deviations from the internal pair creation was observ
Externí odkaz:
https://doaj.org/article/5e46e2f6a47b4c8b967b7b3fdc0c29b5
Autor:
Krasznahorkay A.J., Csatlós M., Csige L., Gulyás J., Ketel T.J., Krasznahorkay A., Kuti I., Nagy Á., Nyakó B.M., Sas N., Timár J.
Publikováno v:
EPJ Web of Conferences, Vol 142, p 01019 (2017)
Electron-positron angular correlations were remeasured for the 17.6 MeV (Jπ = 1+ → 0+) ground state transition in 8Be using an improved setup compared to one we used previously. Significant deviations from the internal pair creation was observed a
Externí odkaz:
https://doaj.org/article/f4e6e208fb5c4a11b4cc596f3c277bb5
Autor:
Krasznahorkay, A. J., Csatlós, M., Csige, L., Gulyás, J., Krasznahorkay, A., Nyakó, B. M., Rajta, I., Timár, J., Vajda, I., Sas, N. J.
Energy-sum and angular correlation spectra of $e^+e^-$ pairs produced in the $^{3}$H(p,$\gamma$)$^{4}$He nuclear reaction have been studied at $E_p$=510, 610 and 900 keV proton energies. The main features of the spectra can be understood by taking in
Externí odkaz:
http://arxiv.org/abs/2104.10075
Autor:
Krasznahorkay, A. J., Csatlos, M., Csige, L., Gulyas, J., Koszta, M., Szihalmi, B., Timar, J., Firak, D. S., Nagy, A., Sas, N. J., Krasznahorkay, A.
We observed electron-positron pairs from the electro-magnetically forbidden M0 transition depopulating the 21.01 MeV 0$^-$ state in $^4$He. A peak was observed in their $e^+e^-$ angular correlations at 115$^\circ$ with 7.2$\sigma$ significance, and c
Externí odkaz:
http://arxiv.org/abs/1910.10459
Autor:
Krasznahorkay, A. J., Csatlós, M., Csige, L., Gácsi, Z., Gulyás, J., Hunyadi, M., Ketel, T. J., Krasznahorkay, A., Kuti, I., Nyakó, B. M., Stuhl, L., Timár, J., Tornyi, T. G., Vajta, Zs.
Publikováno v:
Phys. Rev. Lett. 116, 042501 (2016)
Electron-positron angular correlations were measured for the isovector magnetic dipole 17.6 MeV state ($J^\pi=1^+$, $T=1$) $\rightarrow$ ground state ($J^\pi=0^+$, $T=0$) and the isoscalar magnetic dipole 18.15 MeV ($J^\pi=1^+$, $T=0$) state $\righta
Externí odkaz:
http://arxiv.org/abs/1504.01527
Autor:
Gulyás, J., Ketel, T. J., Krasznahorkay, A. J., Csatlós, M., Csige, L., Gácsi, Z., Hunyadi, M., Krasznahorkay, A., Vitéz, A., Tornyi, T. G.
A multi-detector array has been designed and constructed for the simultaneous measurement of energy- and angular correlations of electron-positron pairs. Experimental results are obtained over a wide angular range for high-energy transitions in 16O,
Externí odkaz:
http://arxiv.org/abs/1504.00489
Autor:
Stuhl, L., Krasznahorkay, A., Csatlós, M., Algora, A., Gulyás, J., Kalinka, G., Timár, J., Kalantar-Nayestanaki, N., Rigollet, C., Bagchi, S., Najafi, M. A.
A neutron spectrometer, the European Low-Energy Neutron Spectrometer (ELENS), has been constructed to study exotic nuclei in inverse-kinematics experiments. The spectrometer, which consists of plastic scintillator bars, can be operated in the neutron
Externí odkaz:
http://arxiv.org/abs/1310.6431