Journal Browser

► Journal Browser

Special Issue Editor

Prof. Dr. Klaus Michael Spohr

E-Mail Website
Guest Editor

Extreme Light Infrastructure, ELI-NP, Bucharest, Romania
Interests: nuclear physics; laser-plasma induced nuclear and atomic physics; nuclei of astrophysical interest; photoacoustic spectroscopy; theory of intense light

Special Issue Information

Dear Colleagues,

Astrophysical studies progress via a huge variety of experiments and theoretical studies in nuclear physics. New possibilities are brought to the field by the emergence of high power laser facilities in the sub-PW to PW regimes. Those all-optical accelerator systems allow the production of intense gamma-ray bursts, as well as electron, and ion acceleration simultaneously. Thus they can provide hot plasma conditions for extremely short times in laboratory experiments. These conditions resemble, to a certain degree, astrophysical scenarios and can be exploited for earth-bound investigations. As the field is relatively new, we are dedicating this Special Issue to the collection and discourse of relevant studies. This includes advanced experimental strategies, their theoretical underpinning with large-scale simulations, and the development of detector concepts that can withstand the associated experimental conditions which are inherently interwoven with the high-intensity nature of the short laser pulses. Knowing that experimental data in the field is still sparse we are also happy to include cutting-edge project plans and technical design report (TDR)-like submissions.

Prof. Dr. Klaus Michael Spohr
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

Nuclear astrophysics
Laser-plasma
Laser nuclear physics
Nuclear and Plasma Simulation

Published Papers (1 paper)

Research

19 pages, 9152 KiB

Open AccessArticle

Optical System for the Transit Spectral Observation of Exoplanet-Atmosphere Characteristics

by Fang Wang, Xuewu Fan, Hu Wang, Yue Pan, Yang Shen, Xiaoyun Lu, Xingqian Du and Shangmin Lin

Appl. Sci. 2021, 11(12), 5508; https://doi.org/10.3390/app11125508 - 14 Jun 2021

Cited by 1 | Viewed by 2095

Abstract

Optical instrumentation with reliable performance is essential for the research of exoplanet atmosphere characteristics. However, due to long distances and weak signals, exoplanets are difficult to be imaged by traditional optical systems. To this end, a novel optical system based on transit spectroscopy is proposed in this paper. On the basis of the principle of the transit-spectroscopy method and the astronomical parameters of observed targets, the optional parameter ranges of a dedicated optical system are analyzed. The transit signal-to-noise ratio (SNR) is introduced for the determination of telescope aperture and throughput. Furthermore, an example of the optical system with a space telescope and spectrometer is proposed according to the above optical index, which is proven to meet the performance requirements. The optical system is required to cover the wavelength of 0.5–8 μm and the field of view (FOV) of 27.9

^{″}

within the diffraction limit. The collecting aperture should be greater than 2 m, and spectral resolutions of two spectrometer channels should approximately be 100 (2–4 μm) and 30 (4–8 μm). The point-spread function (PSF) of each channel at the minimal wavelength should cover 2 pixels. The telescope and dichroic system provide diffraction-limited input beams with the required aperture, FOV, and wavelength for the spectrometer slits. The simulation results of the optical system show that the spectral resolutions of the dual-channel spectrometer were 111–200 and 43–94. The image points of the spectrometer in each wavelength were smaller than the Airy spot within the slit FOV, and the full width at half-maximum (FWHM) of PSF at

λ_{m i n}

provided 2 pixels of 18 μm sampling. The feasibility of the demonstrated optical parameters is proven by the design. Full article

(This article belongs to the Special Issue Applications of Spectroscopy in Astronomy Laboratory Based Experiments of Astrophysical Relevance)

► Show Figures

Figure 1

Journal Menu

Journal Browser

Applications of Spectroscopy in Astronomy Laboratory Based Experiments of Astrophysical Relevance

Share This Special Issue

Special Issue Editor

Special Issue Information

Keywords

Published Papers (1 paper)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI