Zobrazeno 1 - 10
of 1 315
pro vyhledávání: '"Habs, D"'
Autor:
Jung, D., Yin, L., Albright, B. J., Gautier, D. C., Dromey, B., Shah, R., Palaniyappan, S., Letzring, S., Wu, H. -C., Shimada, T., Johnson, R. P., Habs, D., Roth, M., Fernandez, J. C., Hegelich, B. M.
Laser-driven ions have compelling properties and their potential use for medical applications has attracted a huge global interest. One of the major challenges of these applications is generating beams of the required energies. To date, there has bee
Externí odkaz:
http://arxiv.org/abs/1406.0656
Publikováno v:
2014 JINST 9 P01008
We present a nuclear medical imaging technique, employing triple-gamma trajectory intersections from beta^+ - gamma coincidences, able to reach sub-millimeter spatial resolution in 3 dimensions with a reduced requirement of reconstructed intersection
Externí odkaz:
http://arxiv.org/abs/1305.4261
Autor:
Bin, J. H., Ma, W. J., Allinger, K., Wang, H. Y., Kiefer, D., Reinhardt, S., Hilz, P., Khrennikov, K., Karsch, S., Yan, X. Q., Krausz, F., Tajima, T., Habs, D., Schreiber, J.
We report on experimental studies of divergence of proton beams from nanometer thick diamond-like carbon (DLC) foils irradiated by an intense laser with high contrast. Proton beams with extremely small divergence (half angle) of 2 degree are observed
Externí odkaz:
http://arxiv.org/abs/1303.2535
Autor:
Csige, L., Filipescu, D. M., Glodariu, T., Gulyás, J., Günther, M. M., Habs, D., Karwowski, H. J., Krasznahorkay, A., Rich, G. C., Sin, M., Stroe, L., Tesileanu, O., Thirolf, P. G.
The photofission cross-section of 238U was measured at sub-barrier energies as a function of the gamma-ray energy using, for the first time, a monochromatic, high-brilliance, Compton-backscattered gamma-ray beam. The experiment was performed at the H
Externí odkaz:
http://arxiv.org/abs/1302.3425
When a rather cold electron bunch is transported during laser bubble acceleration in a strongly focusing plasma channel with typical forces of 100 GeV/m, it will form partially ordered long electron cylinders due to the relativistically longitudinal
Externí odkaz:
http://arxiv.org/abs/1206.0940
Autor:
Csige, L., Csatlos, M., Faestermann, T., Gulyas, J., Habs, D., Hertenberger, R., Hunyadi, M., Krasznahorkay, A., Maier, H. J., Thirolf, P. G., Wirth, H. -F.
The fission probability of 232Pa was measured as a function of the excitation energy in order to search for hyperdeformed (HD) transmission resonances using the (d,pf) transfer reaction on a radioactive 231Pa target. The experiment was performed at t
Externí odkaz:
http://arxiv.org/abs/1204.0924
We study the production of radioisotopes for nuclear medicine in (gamma,gamma') photoexcitation reactions or (gamma,xn + yp) photonuclear reactions for the examples of ^195mPt, ^117mSn and ^44Ti with high flux [(10^13 - 10^15) gamma/s], small beam di
Externí odkaz:
http://arxiv.org/abs/1202.2238
Modern PET systems reach a spatial resolution of 3-10 mm. A disadvantage of this technique is the diffusion of the positron before its decay with a typical range of ca. 1 mm (depending on its energy). This motion and Compton scattering of the 511 keV
Externí odkaz:
http://arxiv.org/abs/1202.0397
We present for the first time the concept of a seeded {\gamma} quantum Free-Electron-Laser (QFEL) at 478 keV, which has very different properties compared to a classical. The basic concept is to produce a highly brilliant {\gamma} beam via SASE. To p
Externí odkaz:
http://arxiv.org/abs/1201.4706
Autor:
Thirolf, P. G., Habs, D., Filipescu, D., Gernhäuser, R., Günther, M. M., Jentschel, M., Marginean, N., Pietralla, N.
Next-generation gamma beams beams from laser Compton-backscattering facilities like ELI-NP (Bucharest)] or MEGa-Ray (Livermore) will drastically exceed the photon flux presently available at existing facilities, reaching or even exceeding 10^13 gamma
Externí odkaz:
http://arxiv.org/abs/1201.4467