An automatic surface balance for measurements in a radiation field

C. Golian, R. S. Hales, J. G. Hawke, J. M. Gebicki*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


An automatic Langmuir-type surface balance for studies in a UV or ionising radiation field has been designed. The apparatus is suitable for measurements of the following functions: pressure p=p(A), potential V=V(A), area/molecule A=A(t)p, V=V(t)p, p=p(t)A, V=V(t)A where t denotes time, in the temperature range 278-313K maintained to within +or-0.5K. The sensitivity of the balance is 0.1 mu N cm-1 and this value is limited chiefly by the quality of the anti-vibration arrangement. A new design of the surface electrode minimises the influence of radiation from the ionising source upon the film. Examples of monolayer behaviour and other tests are presented.

Original languageEnglish
Article number021
Pages (from-to)787-790
Number of pages4
JournalJournal of Physics E: Scientific Instruments
Issue number8
Publication statusPublished - 1978


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