The Characteristics of an Ultra-High Resolution Ge(Li) Spectrometer for Singles and Coincidence X-Ray and Gamma-Ray Studies

1969 ◽  
Vol 16 (1) ◽  
pp. 36-46 ◽  
Author(s):  
J. M. Palms ◽  
P. Venugopala Rao ◽  
R. E. Wood
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
X Ray

Large-Area Microcalorimeter Detectors for Ultra-High-Resolution X-Ray and Gamma-Ray Spectroscopy

2009 ◽  
Vol 56 (4) ◽  
pp. 2299-2302 ◽  
Author(s):  
M. K. Bacrania ◽  
A. S. Hoover ◽  
P. J. Karpius ◽  
M. W. Rabin ◽  
C. R. Rudy ◽  
...  
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
Large Area ◽  
X Ray ◽  
Gamma Ray Spectroscopy

A High Resolution Gamma-ray and Hard X-ray Spectrometer (HIREGS) for Long Duration Balloon Flights

1998 ◽  
Vol 21 (7) ◽  
pp. 1015-1018 ◽  
Author(s):  
S.E. Boggs ◽  
R.P. Lin ◽  
P.T. Feffer ◽  
S. Slassi-Sennou ◽  
S. McBride ◽  
...  
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
X Ray ◽  
Long Duration ◽  
High Resolution Gamma

scholarly journals N49: The Site of a Gamma-ray Burst. Preliminary Results from X-ray Observations

1983 ◽  
Vol 101 ◽  
pp. 573-577
Author(s):  
G. Pizzichini ◽  
T. L. Cline ◽  
U. D. Desai ◽  
B. J. Teegarden ◽  
W. D. Evans ◽  
...  
Keyword(s):  
High Resolution ◽  
Supernova Remnant ◽  
Gamma Ray ◽  
Large Magellanic Cloud ◽  
X Rays ◽  
Radio Image ◽  
Gamma Ray Burst ◽  
X Ray ◽  
Preliminary Results ◽  
Einstein Observatory

The error box of the unusual Gamma-Ray Burst of March 5, 1979 falls completely inside the optical and radio image of the Supernova Remnant N49 in the Large Magellanic Cloud. This region was observed twice in x-rays with the High Resolution Imager of the Einstein Observatory, six weeks and nearly two years after the Gamma-Ray Burst. We show the comparison between the two observations.

Hard X-ray and gamma-ray spectrometer of high resolution and sensitivity on board the international space station (ISS)

2000 ◽  
Vol 25 (3-4) ◽  
pp. 901-904
Author(s):  
S.I. Svertilov ◽  
V.G. Stolpovskii ◽  
V.V. Bogomolov ◽  
M.I. Kudryavtsev ◽  
I.G. Mitrofanov ◽  
...  
Keyword(s):  
High Resolution ◽  
International Space Station ◽  
Gamma Ray ◽  
Space Station ◽  
International Space ◽  
X Ray ◽  
Gamma Ray Spectrometer

scholarly journals High-resolution Schottky CdTe diode for hard X-ray and gamma-ray astronomy

1999 ◽  
Vol 436 (1-2) ◽  
pp. 111-119 ◽  
Author(s):  
Tadayuki Takahashi ◽  
Biswajit Paul ◽  
Kazuyuki Hirose ◽  
Chiho Matsumoto ◽  
Ryouichi Ohno ◽  
...  
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Astronomy

scholarly journals HIGH-RESOLUTION X-RAY OBSERVATIONS OF THE PULSAR WIND NEBULA ASSOCIATED WITH THE GAMMA-RAY SOURCE HESS J1640–465

2009 ◽  
Vol 706 (2) ◽  
pp. 1269-1276 ◽  
Author(s):  
A. Lemiere ◽  
P. Slane ◽  
B. M. Gaensler ◽  
S. Murray
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
X Ray ◽  
Pulsar Wind

scholarly journals Cyclostratigraphy of the Middle to Upper Ordovician successions of the Armorican Massif (western France) using portable X-ray fluorescence

2022 ◽  
Author(s):  
Matthias Sinnesael ◽  
Alfredo Loi ◽  
Marie-Pierre Dabard ◽  
Thijs R. A. Vandenbroucke ◽  
Philippe Claeys
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
Spectral Power ◽  
Upper Ordovician ◽  
Deep Time ◽  
High Resolution Data ◽  
X Ray ◽  
Natural Gamma ◽  
Geochemical Analyses ◽  
Armorican Massif

Abstract. To expand traditional cyclostratigraphic numerical methods beyond their common technical limitations and apply them to truly deep-time archives we need to reflect on the development of new approaches to sedimentary archives that traditionally are not targeted for cyclostratigraphic analysis, but that frequently occur in the impoverished deep-time record. Siliciclastic storm-dominated shelf environments are a good example of such records. Our case study focusses on the Middle to Upper Ordovician siliciclastic successions of the Armorican Massif (western France), which are well-studied in terms of sedimentology and sequence stratigraphy. In addition, these sections are protected geological heritage due to the extraordinary quality of the outcrops. We therefore tested the performance of non-destructive high-resolution (cm-scale) portable X-ray fluorescence and natural gamma-ray analyses on outcrop to obtain major and trace element compositions. Despite the challenging outcrop conditions in the tidal beach zone, our geochemical analyses provide useful information regarding general lithology and several specific sedimentary features such as the detection of paleoplacers, or the discrimination between different types of diagenetic concretions such as nodules. Secondly, these new high-resolution data are used to experiment the application of commonly used numerical cyclostratigraphic techniques on this siliciclastic storm-dominated shelf environment, a non-traditional sedimentological setting for cyclostratigraphic analysis. In the lithological relatively homogenous parts of the section spectral power analyses and bandpass filtering hint towards a potential astronomical imprint of some sedimentary cycles, but this needs further confirmation in the absence of more robust independent age constraints.

High-resolution gamma-ray study of 185Wm

1970 ◽  
Vol 48 (5) ◽  
pp. 502-510 ◽  
Author(s):  
S. C. Gujrathi ◽  
J. M. D'auria
Keyword(s):  
High Resolution ◽  
Gamma Rays ◽  
Ground State ◽  
Internal Conversion ◽  
Gamma Ray ◽  
X Ray ◽  
Isomeric Level ◽  
Coincidence System ◽  
Internal Conversion Coefficients ◽  
Conversion Coefficients

The decay of 185Wm has been investigated using a high-resolution Ge(Li) X-ray spectrometer and a Ge(Li)–NaI(Tl) coincidence system. The energies and relative intensities (given in parentheses) of the observed gamma rays associated with the decay of the 185Wm (T1,2 = 1.68 min) are: 23.54 (3.3), 42.29 (1.1), 65.857 (100), 93.30 (0.5), 94.59 (2.2), 107.850 (6.8), 122.05 (1.5), 131.554 (84.0), 164.334 (11), 173.675(61.5),and 187.879(15.4) keV. The energy of the isomeric level has been deduced to be 197.41 keV and decays to the ground state through levels at 187.88, 173.68, 93.29, 65.86, and 23.54 keV. In addition, it was deduced experimentally from measured internal-conversion coefficients that the multipolarity of the 131.55 keV transition is E3 while the 65.86 keV transition is an M1 + E2 mixture with a 30 ± 7.5% M1 component.

High-resolution x-ray characterization of mosaic crystals for hard x-and gamma-ray astronomy

2011 ◽  
Author(s):  
Claudio Ferrari ◽  
Elisa Buffagni ◽  
Laura Marchini ◽  
Andrea Zappettini
Keyword(s):  
High Resolution ◽  
Gamma Ray ◽  
X Ray ◽  
Gamma Ray Astronomy ◽  
Mosaic Crystals
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