نتایج جستجو برای: x ray spectrograph

تعداد نتایج: 667381  

2008
F. Favata C. Neiner P. Testa G. Hussain

Aims. We have performed a set of highand low-spectral resolution phase-resolved X-ray observations of the magnetic B star β Cep, for which theoretical models predict the presence of a confined wind emitting X-rays from stationary shocks. Some of the models predict, given the peculiar geometry of β Cep, strong rotational modulation of the X-ray emission, while other models predict a much lower a...

2005
Luis E. Campusano

We analyze the mass content of the massive strong-lensing cluster Abell 586 (z = 0.17). We use optical data (imaging and spectroscopy) obtained with the Gemini Multi-Object Spectrograph (GMOS) mounted on the 8-m Gemini-North telescope, together with publicly available X-ray data taken with the Chandra space telescope. Employing different techniques – velocity distribution of galaxies, weak grav...

2005
Luis E. Campusano

We analyze the mass content of the massive strong-lensing cluster Abell 586 (z = 0.17). We use optical data (imaging and spectroscopy) obtained with the Gemini Multi-Object Spectrograph (GMOS) mounted on the 8-m Gemini-North telescope, together with publicly available X-ray data taken with the Chandra space telescope. Employing different techniques – velocity distribution of galaxies, weak grav...

1997
G. Schriever R. Lebert A. Naweed S. Mager W. Neff

The development of new types of sophisticated soft x-ray sources requires the knowledge of their emission characteristics such as photon flux, spectral distribution, and size of the radiation source. Calibrated spectrographs for the soft x-ray region are needed to determine these properties. The components of a soft x-ray spectrograph consisting of a pinhole gold transmission grating and a char...

2013
Takashi Imazono Masato Koike Tetsuya Kawachi Noboru Hasegawa Masaru Koeda Tetsuya Nagano Hiroyuki Sasai Yuki Oue Zeno Yonezawa Satoshi Kuramoto Masami Terauchi Hideyuki Takahashi Nobuo Handa Takanori Murano Kazuo Sano

We have developed a wavelength-dispersive soft x-ray spectrograph covering an energy region of 50-4000 eV to attach to a conventional electron microscope. The energy range was properly divided into four ranges of 50-200 eV, 155-350 eV, 300-2200 eV, and 2000-4000 eV, and a versatile spectrograph equipped with interchangeable multiple gratings optimized in the respective energy ranges has been de...

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1919

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