冥王星和卡戎主要冰类似物的真空紫外光吸收

Vacuum ultraviolet photoabsorption of prime ice analogues of Pluto and Charon.

作者信息

Pavithraa S, Lo J-I, Rahul K, Raja Sekhar B N, Cheng B-M, Mason N J, Sivaraman B

机构信息

Physical Research Laboratory, Ahmedabad 380 009, India.

National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2018 Feb 5;190:172-176. doi: 10.1016/j.saa.2017.08.060. Epub 2017 Aug 26.

DOI:10.1016/j.saa.2017.08.060

PMID:28922643

Abstract

Here we present the first Vacuum UltraViolet (VUV) photoabsorption spectra of ice analogues of Pluto and Charon ice mixtures. For Pluto the ice analogue is an icy mixture containing nitrogen (N), carbon monoxide (CO), methane (CH) and water (HO) prepared with a 100:1:1:3 ratio, respectively. Photoabsorption of icy mixtures with and without HO were recorded and no significant changes in the spectra due to presence of HO were observed. For Charon a VUV photoabsorption spectra of an ice analogue containing ammonia (NH) and HO prepared with a 1:1 ratio was recorded, a spectrum of ammonium hydroxide (NHOH) was also recorded. These spectra may help to interpret the P-Alice data from New Horizons.

摘要

在此，我们展示了冥王星和卡戎冰混合物的冰模拟物的首个真空紫外（VUV）光吸收光谱。对于冥王星，其冰模拟物是一种分别按100:1:1:3的比例制备的含有氮（N）、一氧化碳（CO）、甲烷（CH）和水（HO）的冰混合物。记录了含HO和不含HO的冰混合物的光吸收情况，未观察到因HO的存在而导致光谱有显著变化。对于卡戎，记录了一种按1:1比例制备的含有氨（NH）和HO的冰模拟物的VUV光吸收光谱，还记录了氢氧化铵（NHOH）的光谱。这些光谱可能有助于解释“新视野号”的P - 爱丽丝探测器的数据。