在夜空中探测莱曼-β和氦共振辐射。

Detection of Lyman-beta and Helium Resonance Radiation in the Night Sky.

出版信息

Science. 1968 May 31;160(3831):990-1. doi: 10.1126/science.160.3831.990.

DOI:10.1126/science.160.3831.990

Abstract

A rocket-borne photometer has detected far ultraviolet night glow radiations that are identified as Lyman-beta (HI 1026 angstroms), and the helium lines at 304 or 584 angstroms, or at both. At an altitude of 227 kilometers the measured intensity for Lyman-beta was about 10 rayleighs. The discrimination characteristics of the broad-band helium radiation filter give helium line intensities, at 227 kilometers, of 4.8 and 12 rayleighs, respectively, pending identification of the wavelength of the radiation as 304 or 584 angstroms. These ultraviolet radiations appear sufficient to maintain the night E and F(1) regions of the ionosphere.

摘要

火箭携带的光度计探测到远紫外夜辉辐射，这些辐射被确定为莱曼-β（HI 1026 埃）和 304 埃或 584 埃的氦线，或者两者都有。在 227 公里的高度，莱曼-β的测量强度约为 10 瑞利。宽带氦辐射滤光片的鉴别特性给出了 227 公里处的氦线强度，分别为 4.8 和 12 瑞利，有待确定辐射的波长为 304 埃或 584 埃。这些紫外线辐射足以维持电离层的 E 和 F（1）区。