scholarly journals Mass determination of the charged pion, using high precision X-ray spectroscopy

2020 ◽  
Vol 9 ◽  
pp. 308
Author(s):  
D. F. Anagnostopoulos, et al.
Keyword(s):  
Electronic Transition ◽  
Transition Energy ◽  
Charged Pion ◽  
Pion Mass ◽  
Mass Determination ◽  
Crystal Spectrometer ◽  
X Ray ◽  
Line Shapes ◽  
A Value

X-ray transitions in pionic nitrogen were measured using a curved crystal spectrometer. From the transition energy, calibrated with the help of the copper Ka1,2 electronic transition, a value for the charged pion mass of (139.57071± 0.00053) MeV/c2 was deduced. In order to reduce the uncertainty of the charged pion mass in the level of 1 ppm, we propose the determination of pionic transition energy based on the more precisely known energies and line shapes of muonic transitions.

Charged Pion Mass Determination and Energy — Calibration Standards Based on Pionic X-ray Transitions

2001 ◽  
pp. 500-507
Author(s):  
D. F. Anagnostopoulos ◽  
M. Augsburger ◽  
G. Borchert ◽  
D. Chatellard ◽  
P. El-Khoury ◽  
...  
Keyword(s):  
Charged Pion ◽  
Pion Mass ◽  
Energy Calibration ◽  
Mass Determination ◽  
Calibration Standards ◽  
X Ray

scholarly journals Atomic Data Needed for X-ray and EUV Astronomy

1992 ◽  
Vol 9 ◽  
pp. 573-574
Author(s):  
John C. Raymond
Keyword(s):  
Spectral Resolution ◽  
Atomic Data ◽  
Ionization State ◽  
Crystal Spectrometer ◽  
X Ray ◽  
Transmission Grating ◽  
Elemental Abundances ◽  
The Past ◽  
Accurate Temperature

AbstractThe astronomical X-ray and EUV satellites of the past generally had low enough spectral resolution that atomic data of modest quality was sufficient for most interpretation of the data. Typical proportional counter resolution Δ E/E ~ 1 permits a determination of the spectral shape sufficient for an estimate of the temperature of the emitting gas, but only the Fe K feature at 6.7 keV stands out as a distinct emission line. The higher spectral resolution Einstein Transmission Grating, Solid State Spectrometer, and Focal Plane Crystal Spectrometer instruments measured a score of emission lines or line blends, permitting determinations of the elemental abundances, temperature, and ionization state of the emitting gas. The higher spectral resolution and throughput of the BBXRT aboard the ASTRO mission and the instruments planned for EUVE, ASTRO-D, AXAF, and XMM will make possible a far more detailed analysis of the data. It should be possible to derive better abundances for more elements, accurate temperature distributions, electron densities, and accurate ionization states.

scholarly journals Mass determination of 5 relaxed galaxy clusters with Chandra X-ray data

2019 ◽  
Vol 1354 ◽  
pp. 012014
Author(s):  
H Wulandari ◽  
A H Fikri ◽  
K Vierdayanti ◽  
A N I Putri ◽  
D G Ramadhan
Keyword(s):  
Galaxy Clusters ◽  
Mass Determination ◽  
X Ray

Chemical State Analysis using a Gearless Two-Crystal X-Ray Spectrometer

1991 ◽  
Vol 35 (A) ◽  
pp. 393-399
Author(s):  
Tokuzo Konishi ◽  
Kazuo Nishihagi ◽  
Kazuo Taniguchi
Keyword(s):  
High Resolution ◽  
Systematic Study ◽  
Chemical State ◽  
Crystal Spectrometer ◽  
X Ray ◽  
Analyzer Crystal ◽  
Chemical Effects ◽  
Scanning Range ◽  
State Analysis

A two-crystal spectrometer for chemical state analysis by high-resolution x-ray fluorescence spectrometry employs hall-screw and slide mechanisms rather than gears to obtain a 2θ scanning range of 40° -147°; a Δ2θ scanning step of 10−4 deg under vacuus; a 2θ resolution of 10−4 deg in determination of an intercrystal angle with encoder-based measurement; and servomechanical control of position. The spectrometer, although simple in structure, is a powerful instrument for chemical state analysis, as demonstrated by its high resolution, precision, and stability; as demonstrated in the determination of the Kα1 lines of first transition metals with Si(220) as analyzer crystal, and in its application to a systematic study of the chemical effects on Ni Kα1 and Kα2.

Precision determination of pion mass using X-ray CCD spectroscopy

2002 ◽  
Vol 477 (1-3) ◽  
pp. 461-468 ◽  
Author(s):  
N Nelms ◽  
D.F Anagnostopoulos ◽  
M Augsburger ◽  
G Borchert ◽  
D Chatellard ◽  
...  
Keyword(s):  
Pion Mass ◽  
X Ray ◽  
Precision Determination

Integrating X-ray absorption for mass determination of cells

1972 ◽  
Vol 37 (1) ◽  
pp. 115-124
Author(s):  
V.W. Steward ◽  
S. Rudofsky
Keyword(s):  
Mass Determination ◽  
X Ray ◽  
X Ray Absorption

Mass Determination Algorithms Using High Energy Digital Radiography

2015 ◽  
Vol 1085 ◽  
pp. 455-459 ◽  
Author(s):  
Sergei P. Osipov ◽  
Vasilii A. Klimenov ◽  
Oleg S. Osipov ◽  
Vil'dan D. Samigullin ◽  
Aleksandr M. Shtein
Keyword(s):  
Test Object ◽  
Effective Atomic Number ◽  
High Energy ◽  
Mass Determination ◽  
Radiographic Images ◽  
X Ray ◽  
Large Size ◽  
X Ray Imaging ◽  
Cargo Inspection

The paper presents foundations of the algorithm of processing primary radiographic images of large-size cargoes that allows determination of their masses. Two possible approaches to form definite algorithm of processing radiographic information were analyzed. The choice of the approaches depends on the completeness of information about the test object. The first approach to design mass determination algorithm is connected with inspecting industrial products. Industrial inspecting products are characterized by a completeness of information about the material, its structure, the geometry. The information augmented by selecting maximum X-ray energy and calibrating by test object allows determination the mass of inspecting object by the only radiographic image with high precision. The second approach is caused by indeterminacy and incomplete information about inspecting object. This case is typical for problems of cargo inspection. Corresponding algorithm modification is based on using dual-energy X-ray imaging that allows determination of the effective atomic number of test object and provision of the required precision of mass estimation.

Theoretical determination of K X-ray transition energy and probability values for highly charged (He- through B-like) Nd, Sm, Gd, Dy, Er, and Yb ions

2019 ◽  
Vol 154 ◽  
pp. 17-20 ◽  
Author(s):  
J.P. Marques ◽  
M.C. Martins ◽  
A.M. Costa ◽  
P. Indelicato ◽  
F. Parente ◽  
...  
Keyword(s):  
Transition Energy ◽  
Theoretical Determination ◽  
X Ray
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