Classification of Iron Lines in the Spectrum of the Sun and Zeta in the Range 167 Å to 220 Å
Classification of Iron Lines in the Spectrum of the Sun and Zeta in the Range 167 Å to 220 Å
复制标题
太阳和 Zeta 光谱中 167 Å 至 220 Å 范围内铁谱线的分类
作者：
A. Gabriel;B. Fawcett;C. Jordan
许多使用火箭或卫星光谱仪的团队1 -3已经在167 ° C和220 ° C之间的太阳光谱中观察到一组强烈的不明发射线。这些品系的起源和分类引起了许多实验室的极大兴趣。这些线首先由福塞特等人4从实验室来源报道，他们在哈维尔的Zeta放电中产生了它们。有强烈的迹象表明，放电管壁上的铁是罪魁祸首。埃尔顿等人（5）和豪斯、多伊泽曼和索耶（6）提供了铁的进一步证据，他们通过在θ箍缩放电中加入铁产生了相同的谱线。卡勒姆的福塞特和加布里埃尔7表明，这些谱线可以在各种铁火花中产生，而且在从钙到镍的周期内，所有元素都能产生类似的强谱线系统。从这些元素的波数变化，他们能够说3 p-3d跃迁是负责的。通过研究强度随激发能量的变化，他们获得了FeIX和FeXIII之间的离子相关性。亚历山大、费尔德曼和弗伦克尔8在几种不同类型的火花中观察到了其中的一些谱线，并将电离度指定为FeVII至FeX。Neupert 9试图通过将来自太阳的强度与太阳活动周期相关联来分配电离状态，并提出了FeX和FeXIV之间的离子。在对太阳数据的分析中，Zirin 10暂时将该光谱区域中的三条谱线归类为FeXIII谱线。
A NUMBER of teams1–3 using rocket or satellite-borne spectrometers have made observations of a group of intense unidentified emission lines in the solar spectrum between 167 Å and 220 Å. The origin and classification of these lines have aroused considerable interest in a number of laboratories. The lines were first reported from laboratory sources by Fawcett et al.4, who produced them in the Zeta discharge at Harwell. There were strong indications that iron from the walls of the discharge vessel was responsible. Further evidence for iron was provided by Elton et al.5 and House, Deutsehmann and Sawyer6, who produced the same lines by adding iron to θ-pinch discharges. Fawcett and Gabriel7 at Culham showed that the lines could be produced in various iron sparks, and also produced similar systems of intense lines from all elements in the period from calcium to nickel. From the wave number variation in these elements, they were able to state that 3p–3d transitions were responsible. By studying the intensity variation with exciting energy they obtained a correlation with ions between FeIX and FeXIII. Alexander, Feldman and Fraenkel8 observed some of these lines in several sparks of different types, and assigned degrees of ionization as FeVII to FeX. Neupert9 has made an attempt to assign ionization states by correlating the intensities from the Sun with periods of solar activity, and proposed ions between FeX and FeXIV. Zirin10 in an analysis of solar data2 has tentatively classified three lines in this spectral region as FeXIII lines.