Axial Observation of X-Ray Spectra from a Beam-Foil Source

1988 ◽  
Vol 102 ◽  
pp. 339-342
Author(s):  
J.M. Laming ◽  
J.D. Silver ◽  
R. Barnsley ◽  
J. Dunn ◽  
K.D. Evans ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Heavy Ion ◽  
Ion Beams ◽  
Beam Axis ◽  
Doppler Broadening ◽  
X Ray ◽  
Beam Foil

AbstractNew observations of x-ray spectra from foil-excited heavy ion beams are reported. By observing the target in a direction along the beam axis, an improvement in spectral resolution, δλ/λ, by about a factor of two is achieved, due to the reduced Doppler broadening in this geometry.

scholarly journals Preheating of heavy-ion-beam targets by secondary particles

1992 ◽  
Vol 10 (1) ◽  
pp. 189-200 ◽  
Author(s):  
M. M. Basko
Keyword(s):  
Ion Beam ◽  
Nuclear Fission ◽  
Heavy Ion ◽  
Ion Beams ◽  
X Ray ◽  
Fission Fragments ◽  
Secondary Particles ◽  
The Face ◽  
Heavy Ion Beam

The contribution of different sorts of secondary particles to the preheating of thermonuclear targets driven by heavy-ion beams is analyzed. Two types of illumination geometry are considered: side-on and face-on locations of the fuel with respect to the ion beam. It is shown that a substantial preheating can be expected from (1) nuclear fission fragments for the face-on fuel position and (2) δ-electrons and low-Z nuclear fragments for the side-on fuel location. All the X-ray and gamma photons of various origin are shown to produce a negligible fuel heating.

scholarly journals Target implosion uniformity in heavy-ion fusion

2016 ◽  
Vol 34 (4) ◽  
pp. 735-741 ◽  
Author(s):  
T. Karino ◽  
S. Kawata ◽  
S. Kondo ◽  
T. Iinuma ◽  
T. Kubo ◽  
...  
Keyword(s):  
Growth Rate ◽  
Physical Quantity ◽  
Dynamic Instability ◽  
Heavy Ion ◽  
Ion Beams ◽  
Instability Growth Rate ◽  
Beam Axis ◽  
Inertial Fusion ◽  
Instability Growth ◽  
Heavy Ion Fusion

AbstractIn this paper, the robustness of the dynamic instability mitigation mechanism is first examined, and then the instability mitigation phenomenon is demonstrated in a deuterium–tritium (DT) fuel target implosion by wobbling heavy-ion beams (HIBs). The results presented here show that the mechanism of the dynamic instability mitigation is rather robust against changes in the phase, the amplitude and the wavelength of the wobbling perturbation applied. In general instability would emerge from the perturbation of the physical quantity. Normally the perturbation phase is unknown, so that the instability growth rate is discussed. However, if the perturbation phase is known, the instability growth can be controlled by a superposition of perturbations imposed actively: if the perturbation is induced by, for example, a driving beam axis oscillation or wobbling, the perturbation phase could be controlled and the instability growth is mitigated by the superposition of the growing perturbations. In this paper, we realize the superposition of the perturbation by the wobbling HIBs’ illumination onto a DT fuel target in heavy-ion inertial fusion (HIF). Our numerical fluid implosion simulations present that the implosion non-uniformity is mitigated successfully by the wobbling HIBs illumination in HIF.

The beam-foil excitation technique applied to heavy ion beams (20

1970 ◽  
Vol 90 ◽  
pp. 41-46 ◽  
Author(s):  
T. Andersen ◽  
K.A. Jessen ◽  
G. Sørensen
Keyword(s):  
Heavy Ion ◽  
Ion Beams ◽  
Beam Foil

Multi-scale Investigation of Heterogeneous Swift Heavy Ion Tracks in Stannate Pyrochlore

2021 ◽  
Author(s):  
Eric O'Quinn ◽  
Cameron Tracy ◽  
William F. Cureton ◽  
Ritesh Sachan ◽  
Joerg C. Neuefeind ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Heavy Ion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structural Modifications ◽  
Multi Scale ◽  
Ion Tracks ◽  
Swift Heavy Ion ◽  
Transmission Electron

Er2Sn2O7 pyrochlore was irradiated with swift heavy Au ions (2.2 GeV), and the induced structural modifications were systematically examined using complementary characterization techniques including transmission electron microscopy (TEM), X-ray diffraction...

scholarly journals Proton therapy for craniopharyngioma in adults: a protocol for systematic review and meta-analysis

BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e046043
Author(s):  
Pengtao Li ◽  
Jialing Wang ◽  
Aximujiang Axier ◽  
Kai Zhou ◽  
Jingwei Yun ◽  
...  
Keyword(s):  
Proton Therapy ◽  
Ion Beam ◽  
Grey Literature ◽  
Intervention Group ◽  
Heavy Ion ◽  
Cochrane Library ◽  
Secondary Outcome ◽  
Significant Heterogeneity ◽  
Recurrence Rates ◽  
X Ray

IntroductionCraniopharyngioma is the most challenging to treat brain tumour with high recurrence rates, which can be effectively reduced by adjuvant radiotherapy. In recent years, proton therapy (PT), with its physical properties of heavy ion beam, that is, Prague peak phenomenon, has been more frequently used in patients with craniopharyngioma. Compared with conventional X-ray beam radiotherapy, PT can reduce the damage to normal tissues and enlarge the damage to tumours. Some studies have shown that PT has advantages in the treatment of craniopharyngioma in adults. However, the optimal management of craniopharyngioma remains controversial. The purpose of this study was to evaluate the efficacy and safety of PT for craniopharyngioma in adults.Methods and analysisWe will search six databases (MEDLINE, EMBASE, Web of Science, the Cochrane Library, Amed, Scopus), clinical research registration websites and grey literature, aiming to identify randomised controlled trials (RCTs) on PT for craniopharyngioma in adults between 1 January 1954 and 28 September 2021. In the RCTs, PT will be used as the intervention group, and conventional X-ray beam radiotherapy will be used as the comparator group. Tumour recurrence and survival will be the primary outcome, and treatment-related toxicity will be the secondary outcome. The study selection, data extraction, bias risk and quality evaluation will be operated by two to four researchers independently. We will use Review Manager V.5.2 (RevMan V.5.2) for data analysis. If there is significant heterogeneity, we will identify the source of heterogeneity by subgroup analysis.Ethics and disseminationOur study is based on existing RCTs and does not require ethical approval. The results of the study will be published in a peer-reviewed journal or at a related conference.PROSPERO registration numberCRD42020200909.

Laser-cooled and trapped atoms as a precision target for heavy ion beams

1996 ◽  
Vol 99 (1) ◽  
pp. 127-133 ◽  
Author(s):  
U. Schünemann ◽  
I. Manek ◽  
R. Grimm ◽  
D. Habs ◽  
D. Schwalm
Keyword(s):  
Heavy Ion ◽  
Ion Beams ◽  
Trapped Atoms

Uranium–molybdenum nuclear fuel plates behaviour under heavy ion irradiation: An X-ray diffraction analysis

2009 ◽  
Vol 385 (2) ◽  
pp. 449-455 ◽  
Author(s):  
H. Palancher ◽  
N. Wieschalla ◽  
P. Martin ◽  
R. Tucoulou ◽  
C. Sabathier ◽  
...  
Keyword(s):  
Diffraction Analysis ◽  
Nuclear Fuel ◽  
Ion Irradiation ◽  
Heavy Ion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Heavy Ion Irradiation

Heavy-ion beams required for the RIA accelerator

2004 ◽  
Vol 75 (5) ◽  
pp. 1427-1430 ◽  
Author(s):  
R. C. Pardo ◽  
C. L. Jiang ◽  
J. N. Nolen ◽  
K. E. Rehm ◽  
G. Savard
Keyword(s):  
Heavy Ion ◽  
Ion Beams

Implications of heavy-ion-induced satellite X-ray emission IV

1984 ◽  
Vol 3 (1-3) ◽  
pp. 94-99 ◽  
Author(s):  
T.M. Rosseel ◽  
J.M. Dale ◽  
H.W. Dunn ◽  
L.D. Hulett ◽  
S. Kahane ◽  
...  
Keyword(s):  
Heavy Ion ◽  
X Ray
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