skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nuclear photonics

Abstract

With the planned new {gamma}-beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucharest (Romania) with 10{sup 13}{gamma}/s and a band width of {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -3}, a new era of {gamma} beams with energies up to 20MeV comes into operation, compared to the present world-leading HI{gamma}S facility at Duke University (USA) with 10{sup 8}{gamma}/s and {Delta}E{gamma}/E{gamma} Almost-Equal-To 3 Dot-Operator 10{sup -2}. In the long run even a seeded quantum FEL for {gamma} beams may become possible, with much higher brilliance and spectral flux. At the same time new exciting possibilities open up for focused {gamma} beams. Here we describe a new experiment at the {gamma} beam of the ILL reactor (Grenoble, France), where we observed for the first time that the index of refraction for {gamma} beams is determined by virtual pair creation. Using a combination of refractive and reflective optics, efficient monochromators for {gamma} beams are being developed. Thus, we have to optimize the total system: the {gamma}-beam facility, the {gamma}-beam optics and {gamma} detectors. We can trade {gamma} intensity for band width, going down to {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -6} and address individual nuclear levels. The term 'nuclear photonics' stresses the importance of nuclear applications. We canmore » address with {gamma}-beams individual nuclear isotopes and not just elements like with X-ray beams. Compared to X rays, {gamma} beams can penetrate much deeper into big samples like radioactive waste barrels, motors or batteries. We can perform tomography and microscopy studies by focusing down to {mu}m resolution using Nuclear Resonance Fluorescence (NRF) for detection with eV resolution and high spatial resolution at the same time. We discuss the dominating M1 and E1 excitations like the scissors mode, two-phonon quadrupole octupole excitations, pygmy dipole excitations or giant dipole excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also more brilliant secondary beams of neutrons and positrons can be produced.« less

Authors:
; ; ;  [1]
  1. Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany)
Publication Date:
OSTI Identifier:
22069047
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1462; Journal Issue: 1; Conference: LEI 2011: Conference on light at extreme intensities, Szeged (Hungary), 14-18 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 43 PARTICLE ACCELERATORS; BEAM OPTICS; BEAM PRODUCTION; E1-TRANSITIONS; EXCITATION; GIANT RESONANCE; M1-TRANSITIONS; NEUTRON BEAMS; NEUTRONS; NUCLEAR ELECTRIC MOMENTS; NUCLEAR STRUCTURE; PAIR PRODUCTION; PHONONS; PHOTON BEAMS; POSITRON BEAMS; REFRACTIVE INDEX; RESONANCE FLUORESCENCE; SECONDARY BEAMS; SPATIAL RESOLUTION

Citation Formats

Habs, D, Guenther, M M, Jentschel, M, Thirolf, P G, Max Planck Institut fuer Quantenoptik, D-85748 Garching, Institut Laue-Langevin, F-38042 Grenoble, and Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching. Nuclear photonics. United States: N. p., 2012. Web. doi:10.1063/1.4736785.
Habs, D, Guenther, M M, Jentschel, M, Thirolf, P G, Max Planck Institut fuer Quantenoptik, D-85748 Garching, Institut Laue-Langevin, F-38042 Grenoble, & Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching. Nuclear photonics. United States. https://doi.org/10.1063/1.4736785
Habs, D, Guenther, M M, Jentschel, M, Thirolf, P G, Max Planck Institut fuer Quantenoptik, D-85748 Garching, Institut Laue-Langevin, F-38042 Grenoble, and Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching. 2012. "Nuclear photonics". United States. https://doi.org/10.1063/1.4736785.
@article{osti_22069047,
title = {Nuclear photonics},
author = {Habs, D and Guenther, M M and Jentschel, M and Thirolf, P G and Max Planck Institut fuer Quantenoptik, D-85748 Garching and Institut Laue-Langevin, F-38042 Grenoble and Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching},
abstractNote = {With the planned new {gamma}-beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucharest (Romania) with 10{sup 13}{gamma}/s and a band width of {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -3}, a new era of {gamma} beams with energies up to 20MeV comes into operation, compared to the present world-leading HI{gamma}S facility at Duke University (USA) with 10{sup 8}{gamma}/s and {Delta}E{gamma}/E{gamma} Almost-Equal-To 3 Dot-Operator 10{sup -2}. In the long run even a seeded quantum FEL for {gamma} beams may become possible, with much higher brilliance and spectral flux. At the same time new exciting possibilities open up for focused {gamma} beams. Here we describe a new experiment at the {gamma} beam of the ILL reactor (Grenoble, France), where we observed for the first time that the index of refraction for {gamma} beams is determined by virtual pair creation. Using a combination of refractive and reflective optics, efficient monochromators for {gamma} beams are being developed. Thus, we have to optimize the total system: the {gamma}-beam facility, the {gamma}-beam optics and {gamma} detectors. We can trade {gamma} intensity for band width, going down to {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -6} and address individual nuclear levels. The term 'nuclear photonics' stresses the importance of nuclear applications. We can address with {gamma}-beams individual nuclear isotopes and not just elements like with X-ray beams. Compared to X rays, {gamma} beams can penetrate much deeper into big samples like radioactive waste barrels, motors or batteries. We can perform tomography and microscopy studies by focusing down to {mu}m resolution using Nuclear Resonance Fluorescence (NRF) for detection with eV resolution and high spatial resolution at the same time. We discuss the dominating M1 and E1 excitations like the scissors mode, two-phonon quadrupole octupole excitations, pygmy dipole excitations or giant dipole excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also more brilliant secondary beams of neutrons and positrons can be produced.},
doi = {10.1063/1.4736785},
url = {https://www.osti.gov/biblio/22069047}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1462,
place = {United States},
year = {Mon Jul 09 00:00:00 EDT 2012},
month = {Mon Jul 09 00:00:00 EDT 2012}
}