Noble gases from the interstellar medium trapped on the MIR space station and analyzed by in vacuo etching

Solar noble gases in Vigarano bulk minerals – First results of the new ’BENGEL’ in-vacuo etching facility

On line etching of bulk EH5 St. Mark’s – Radiogenic and subsolar noble gases

Introduction: On line etching is very useful to analyse noble gas components such as “Q” or the solar wind [1, 2]. A bulk meteorite sample, however, has never been analysed by on line etching in order to characterise its complete noble gas inventory. Experiment: The aim of this ongoing study is to analyse noble gases in a bulk sample of the EH5 chondrite St. Mark’s by on line etching (conc. HF)...

Effect of air column in transport canisters on measured gas contents of coal

Canister desorption is a widely used technique to measure the gas content of coal. The gas content data, when normalized to volume/weight and multiplied by coal seam mass, is used to estimate the gas in place in an area around the cored hole. However, the gas content and the percentage of each constituent are likely to be influenced by trapped air in the canister at the time of the coal enclosu...

Sequestration of Noble Gases by H3 in the Outer Solar Nebula – Implications for the Formation

Astrophysical context: Noble gases are an important component of the atomic population in the universe. It is generally admitted that these elements are inert and do not participate in molecular structures. This statement certainly applies to space chemistry for interactions with neutral systems driven by Van der Waals forces are very weak and can hardly resist turbulence. It may not be relevan...

Laser Microprobe Noble Gas Analysis of Chondrules in the Moorabie L3.8 Chondrite

Introduction: Trapped noble gases were discovered in chon-drules by laser microprobe noble gas analysis [1-3]. The observed noble gases were explained by solar gas acquisition in dust grains before the chondrule formation [1-3]. These results show importance of trapped noble gases in chondrites to understand environment and formation processes of chondrules. We performed the laser microprobe no...