First results from a 6 m/10 m toroidal grating monochromator for soft x-rays

1984 ◽  
Vol 222 (1-2) ◽  
pp. 107-110 ◽  
Author(s):  
F.J. Himpsel ◽  
Y. Jugnet ◽  
D.E. Eastman ◽  
J.J. Donelon ◽  
D. Grimm ◽  
...  
Keyword(s):  
X Rays ◽  
M 10 ◽  
First Results ◽  
Grating Monochromator

First results of SRC’s new high‐energy resolution variable line density grating monochromator beamline: HERMON

1995 ◽  
Vol 66 (2) ◽  
pp. 2072-2074 ◽  
Author(s):  
M. Bissen ◽  
M. Fisher ◽  
G. Rogers ◽  
D. Eisert ◽  
K. Kleman ◽  
...  
Keyword(s):  
Energy Resolution ◽  
High Energy ◽  
High Energy Resolution ◽  
Line Density ◽  
Variable Line ◽  
First Results ◽  
Grating Monochromator

First results from the XMCD facility at the Energy-Dispersive EXAFS beamline of the Indus-2 synchrotron source

2019 ◽  
Vol 26 (2) ◽  
pp. 445-449
Author(s):  
N. Patra ◽  
U. G. P. S. Sachan ◽  
S. SundarRajan ◽  
Sanjay Malhotra ◽  
Vijay Harad ◽  
...  
Keyword(s):  
Magnetic Circular Dichroism ◽  
Energy Dispersive ◽  
X Rays ◽  
Beam Direction ◽  
Synchrotron Source ◽  
X Ray ◽  
Synchrotron Beam ◽  
First Results ◽  
Set Up ◽  
Good Agreement

Setting up of the X-ray Magnetic Circular Dichroism (XMCD) measurement facility with hard X-rays at the Energy-Dispersive EXAFS beamline (BL-08) at the Indus-2 synchrotron source is reported. This includes the design and development of a water-cooled electromagnet having a highest magnetic field of 2 T in a good field volume of 125 mm3 and having a 10 mm hole throughout for passage of the synchrotron beam. This also includes the development of an (X–Z–θ) motion stage for the heavy electromagnet for aligning its axis and the beam hole along the synchrotron beam direction. Along with the above developments, also reported is the first XMCD signal measured on a thick Gd film in the above set-up which shows good agreement with the reported results. This is the first facility to carry out XMCD measurement with hard X-rays in India.

First results of TXRF measurements of low-Z elements on Si wafer surfaces at the PTB plane grating monochromator beamline for undulator radiation at BESSY II

2001 ◽  
Vol 30 (1) ◽  
pp. 24-31 ◽  
Author(s):  
C. Streli ◽  
P. Wobrauschek ◽  
B. Beckhoff ◽  
G. Ulm ◽  
L. Fabry ◽  
...  
Keyword(s):  
Undulator Radiation ◽  
First Results ◽  
Grating Monochromator ◽  
Wafer Surfaces ◽  
Si Wafer

scholarly journals Intraoperative irradiation in breast cancer: preliminary results in 80 patients as partial breast irradiation or anticipated boost prior to hypo-fractionated whole breast irradiation

2021 ◽  
Author(s):  
X. Li ◽  
J. Sanz ◽  
N. Argudo ◽  
M. Vernet-Tomas ◽  
N. Rodríguez ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Patient Reported Outcomes ◽  
Well Being ◽  
Partial Breast Irradiation ◽  
X Rays ◽  
Breast Irradiation ◽  
Intraoperative Irradiation ◽  
Patient Reported ◽  
First Results ◽  
Good Cosmesis

Abstract Purpose To present the first results of intraoperative irradiation (IORT) in breast cancer with a low-energy photon system used as partial breast irradiation (PBI) or as an anticipated boost before whole breast hypo-fractionated irradiation (IORT + WBI), concerning tolerance, side effects, quality of life, and patient-reported outcomes. Materials and methods Eighty patients treated with an Intrabeam® system of 50 kV X-rays received a 20 Gy dose intraoperatively were included. Moderate daily hypofractionation of 2.7 Gy in 15 fractions up to 40.5 Gy was administered if high-risk factors were present. Acute post-operative toxicity, surgery complications, chronic toxicity, patient-reported cosmesis and Breast-Q questionnaire were performed at follow-up visits. Results Thirty-one patients were treated as PBI and the remaining 49 as IORT + WBI. Only the IORT + WBI group presented acute toxicity, mainly mild acute dermatitis (11 patients) and one subacute mastitis. A total of 20 patients presented fibrosis (18 patients grade I, 2 patients grade II), 15 (30.5%) patients in the IORT + WBI group and 3 (9.6%) patients in the group of PBI. The cosmesis evaluation in 73 patients resulted poor, fair, good or excellent in 2, 7, 38 and 26 patients, respectively. In PBI group Breast-Q scored higher, especially in terms of their psychosocial well-being (78 vs 65) and satisfaction with radiation-induced toxicity (77 vs 72, respectively) compared to IORT + WBI group. Conclusion IORT is a well-tolerated procedure with low toxicity, good cosmesis and favorable patient-reported outcomes mainly when administered as PBI.

First results of the STIX hard X-ray telescope onboard Solar Orbiter

2021 ◽  
Author(s):  
Andrea Francesco Battaglia ◽  
Jonas Saqri ◽  
Ewan Dickson ◽  
Hualin Xiao ◽  
Astrid Veronig ◽  
...  
Keyword(s):  
Solar Flares ◽  
Magnetic Energy ◽  
Imaging Spectroscopy ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging ◽  
First Results ◽  
Early Peak ◽  
Accelerated Particles ◽  
Magnetic Energy Release

<p>With the launch and commissioning of Solar Orbiter, the Spectrometer/Telescope for Imaging X-rays (STIX) is the latest hard X-ray telescope to study solar flares over a large range of flare sizes. STIX uses hard X-ray imaging spectroscopy in the range from 4 to 150 keV to diagnose the hottest temperature of solar flare plasma and the related nonthermal accelerated electrons. The unique orbit away from the Earth-Sun line in combination with the opportunity of joint observations with other Solar Orbiter instruments, STIX will provide new inputs into understanding the magnetic energy release and particle acceleration in solar flares. Commissioning observations showed that STIX is working as designed and therefore we report on the first solar microflare observations recorded on June 2020, when the spacecraft was at 0.52 AU from the Sun. STIX’s measurements are compared with Earth-orbiting observatories, such as GOES and SDO/AIA, for which we investigate and interpret the different temporal evolution. The detected early peak of the STIX profiles relative to GOES is due either by nonthermal X-ray emission of accelerated particles interacting with the dense chromosphere or the higher sensitivity of STIX toward hotter plasma.</p>

scholarly journals A Monte Carlo study of high-energy photon transport in matter: application for multiple scattering investigation in Compton spectroscopy

2016 ◽  
Vol 23 (1) ◽  
pp. 244-252 ◽  
Author(s):  
Marek Brancewicz ◽  
Masayoshi Itou ◽  
Yoshiharu Sakurai
Keyword(s):  
Monte Carlo ◽  
Multiple Scattering ◽  
Monte Carlo Study ◽  
High Energy ◽  
X Rays ◽  
Simulation Algorithm ◽  
Energy Photon ◽  
Restricted Geometry ◽  
First Results ◽  
Photon Splitting

The first results of multiple scattering simulations of polarized high-energy X-rays for Compton experiments using a new Monte Carlo program,MUSCAT, are presented. The program is developed to follow the restrictions of real experimental geometries. The new simulation algorithm uses not only well known photon splitting and interaction forcing methods but it is also upgraded with the new propagation separation method and highly vectorized. In this paper, a detailed description of the new simulation algorithm is given. The code is verified by comparison with the previous experimental and simulation results by the ESRF group and new restricted geometry experiments carried out at SPring-8.

Plane grating monochromator system SX700 High Flux: design principle and first results

1993 ◽  
Author(s):  
Dieter Pauschinger ◽  
T. Petasch ◽  
Rolf Traeger ◽  
Kurt B. Becker
Keyword(s):  
Design Principle ◽  
High Flux ◽  
First Results ◽  
Grating Monochromator

Soft X-ray photochemistry beamline at SPring-8

1998 ◽  
Vol 5 (3) ◽  
pp. 545-547 ◽  
Author(s):  
I. Koyano ◽  
M. Okuyama ◽  
E. Ishiguro ◽  
A. Hiraya ◽  
H. Ohashi ◽  
...  
Keyword(s):  
High Resolution ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
X Rays ◽  
High Quality ◽  
X Ray ◽  
Excitation Region ◽  
Linearly Polarized ◽  
Grating Monochromator

Design and construction of a soft X-ray beamline at SPring-8 is reported. The beamline utilizes high-quality linearly polarized soft X-rays obtainable from a figure-8 undulator for the study of photophysical and photochemical processes of atoms, molecules and surfaces in the inner-shell excitation region. It consists of two experimental stations, a photochemistry station and a chemical vapour deposition (CVD) station. A high-resolution grating monochromator is installed at the photochemistry station, while the intense undispersed undulator radiation is used at the CVD station. Unique features of the experimental chambers and of the analysis and characterization systems are described along with those of the monochromator.

A high‐energy spherical grating monochromator for soft x rays at the Daresbury SRS

1992 ◽  
Vol 63 (10) ◽  
pp. 4349-4353 ◽  
Author(s):  
M. Surman ◽  
I. Cragg‐Hine ◽  
J. Singh ◽  
B. J. Bowler ◽  
H. A. Padmore ◽  
...  
Keyword(s):  
High Energy ◽  
X Rays ◽  
Grating Monochromator
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