عنوان

Atomic negative ion survey using accelerator mass spectrometry

Number

TLpq304079525

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Atomic negative ion survey using accelerator mass spectrometry

General Material Designation

[Thesis]

First Statement of Responsibility

M. A. Garwan

Subsequent Statement of Responsibility

T. Litherland

Name of Publisher, Distributor, etc.

University of Toronto (Canada)

Date of Publication, Distribution, etc.

1993

Specific Material Designation and Extent of Item

219

Dissertation or thesis details and type of degree

Ph.D.

Body granting the degree

University of Toronto (Canada)

Text preceding or following the note

1993

Text of Note

Accelerator mass spectrometric methods have been used successfully in the detection of Ca Sr Ba La Ce Pr Nd Sm Eu Gd Tb Dy Tm Yb Lu and Hf The elements Zn, Cd, Hg, Ho, and Er, have also been studied and no detectable signal could be attributed to their atomic negative ions. Using the published (experimental) Ca binding energy, the binding energies of Sr and Ba were estimated to be 110 meV and 170 meV respectively. Dy was observed to be dissociated by the electric fields of the accelerator. Lower limits on the binding energies of the detected lanthanide negative ions have been placed based on their yields, and similar upper limits on the binding energies of the undetected ones have also been estimated. Ambiguities surrounding the AMS method in the detection of the above ions have been identified and resolved. This adds to the versatility of AMS, especially as a promising tool in atomic spectrometry.

Atoms & subatomic particles

dysprosium anion

Pure sciences

M. A. Garwan

T. Litherland

Electronic name

p

[Thesis]

276903

a

Y