Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.v.

Organisation Europeenne De Recherches

Georg Sanger

Walter Peschka

Alfred K Franz

Gerrit Hietkamp

A new high energy chemical complex is provided formed from metastable hel fixed on ammonia (HE.sub.m NH.sub.3), so that the metastable helium electron is captured so as to be held in the 'L' layer of the metastable helium atom. The process for producing the He.sub.m NH.sub.3 complex comprises the following steps: excitation of helium to create metastable helium; deposition of metastable helium on NH.sub.3 to form the complex; and accumulation or condensation of the product. The invention finds a particular application as a propellant in the aerospace field.

High energy materials containing metastable helium, a process for

A gas leakage detection apparatus is described comprising a mass spectrometer with which there is associated a first pumping device for creating a relative vacuum in the apparatus, a selective pumping device having a first pumping speed for air and a second pumping speed for the gas which is to be analyzed, said second pumping speed being lower than the said first pumping speed, and a throttling device connected between the selective pumping device and the first pumping device, this throttling device having an opening chosen so as to let through a flow which is very small compared with the flow produced by the selective pumping device for the air.

Growing community of inventors

Voorschoten, Netherlands

Georg Sanger