Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Farzin Davanloo"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:276-280
The flash X-ray systems developed at the University of Texas at Dallas (UTD) centers on two critical subassemblies: (1) a Blumlein pulsed power source and (2) an X-ray diode properly designed and matched to the pulse forming line. The pulse generator
Autor:
N. C. Zoita, Carl B. Collins, T. Uruga, Jean-Michel Pouvesle, Farzin Davanloo, N. V. Strilchuk, Y. Yoda, V. I. Kirischuk, Iovitzu Popescu, S. Emura
Publikováno v:
Journal de Physique IV (Proceedings). 127:163-168
The Hf-178m2 nuclear spin isomer stores 2.45 MeV of energy for a half life of 31 years. Unperturbed, such nuclei radiate away the stored energy through the emission of gamma photons from electromagnetic (EM) transitions occurring within the nuclei. I
Autor:
Jean-Michel Pouvesle, Carl B. Collins, Y. Yoda, Iovitzu Popescu, Farzin Davanloo, N. C. Zoita, T. Uruga
Publikováno v:
Laser Physics Letters. 2:162-167
Induced release of the high energy densities stored in isomeric nuclear states may be important in the development of ultrashort wavelength lasers. Such a release could compensate the spontaneous power density radiated from the laser medium at thresh
Autor:
V. I. Kirischuk, Carl B. Collins, Farzin Davanloo, N. C. Zoita, S. Emura, Y. Yoda, B. Schmitt, B. Patterson, I. I. Popescu, N. V. Strilchuk, Jean-Michel Pouvesle, T. Uruga
Publikováno v:
Radiation Physics and Chemistry. 71:619-625
A nuclear-XAFS effect occurs during the scattering of electrons or X-ray photons when the excitation of inner shell electrons couples both energy and angular momentum into nuclear channels of excitation. Nuclear transitions can be induced if the dens
Autor:
V. I. Kirischuk, Farzin Davanloo, T. Uruga, N. V. Strilchuk, C. A. Ur, F. J. Agee, Carl B. Collins, S. Emura, D. T. Camase, M. C. Iosif, Jean-Michel Pouvesle, Remi Dussart, Iovitzu Popescu, N. C. Zoita, A. C. Rusu
Publikováno v:
Europhysics Letters (EPL). 57:677-682
A process for transferring energy from electron shells into nuclear excitation, NEET, has offered the promise for modulating nuclear properties at accessible levels of power. It had been proven recently by exciting a nuclear level of 197Au with synch
Autor:
D. T. Camase, Iovitzu Popescu, Remi Dussart, N. C. Zoita, N. V. Strilchuk, Jean-Michel Pouvesle, Farzin Davanloo, M. C. Iosif, C. A. Ur, V. I. Kirischuk, A. C. Rusu, Carl B. Collins, F. J. Agee
Publikováno v:
Hyperfine Interactions. 135:51-70
Because of the high density of energy storage and the large cross section for its release, nuclear spin isomers have attracted considerable recent interest. The triggering of induced gamma emission from them has encouraged efforts to develop intense
Autor:
P. McDaniel, J. M. Hicks, I. I. Popescu, Remi Dussart, Farzin Davanloo, V. I. Kirischuk, M. C. Iosif, J. M. Pouvesle, C. A. Ur, Carl B. Collins, C. E. Crist, S. A. Karamian
Publikováno v:
Physics of Atomic Nuclei. 63:2067-2072
A sample containing 6.3×1014 nuclei of the 16+ isomer of 178Hf having a half-life of 31 yr and an excitation energy of 2.446 MeV was irradiated with x-ray pulses from a device operated at 15 mA to produce bremsstrahlung with an endpoint energy of 90
Autor:
P. McDaniel, M. C. Iosif, J. M. Hicks, H. E. Roberts, James Carroll, Carl B. Collins, Iovitzu Popescu, Remi Dussart, V. I. Kirischuk, C. A. Ur, S. A. Karamian, Farzin Davanloo, C. E. Crist
Publikováno v:
Physical Review Letters. 82:695-698
A sample of $6.3\ifmmode\times\else\texttimes\fi{}{10}^{14}$ nuclei of the 4-quasiparticle isomer of ${}^{178}\mathrm{Hf}$ having a half-life of 31 yr and excitation energy of 2.446 MeV was irradiated with x-ray pulses from a device typically used in
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 99:713-716
The stacked Blumlein pulse generators developed at the University of Texas at Dallas consist of several triaxial Blumleins stacked in series at one end. The lines are charged in parallel and synchronously commuted with a single switching element at t
Autor:
Ahmed Khacef, Farzin Davanloo, Carl B. Collins, Christophe Cachoncinlle, Jean-Michel Pouvesle, Raymond Viladrosa, Eric Robert
Publikováno v:
Annales de Physique. 19:C1-167
we report on the last improvements performed on a table top flash X- ray device producing strong X-ray doses in nanosecond pulses at high repetition rate. Doses up to 2 rad, at the output window, of 10 keV centered X-rays are emitted either along a 1