TY - JOUR
T1 - Aluminum nitride as a novel aluminum-26 ion source material for accelerator mass spectrometry
AU - Flarend, R.
AU - Hasan, M. E.
AU - Reed, C. S.
N1 - Funding Information:
This research is supported by the National Science Foundation (EAR-0216207). PRIME Lab is supported by the National Science Foundation (EAR-0112480).
PY - 2004/8
Y1 - 2004/8
N2 - A high intensity cesium sputter source was used to measure the current of secondary Al- ions from aluminum nitride (AlN), aluminum diboride (AlB2), aluminum carbide (Al4C3), aluminum powder and aluminum oxide (Al2O3). It was found that AlN produced a substantially higher beam current than Al2O3. Aluminum diboride produced about the same amount of Al- current as the oxide while Al4C3 and the aluminum powder did not perform as well as the oxide. The performance of AlN as a target material for Al- ions depended heavily upon the exposure of AlN to air before being placed in the ion source. For samples with no exposure to air, the AlN produced much less current than Al2O3. For samples with a very short exposure to air, AlN yielded a fivefold improvement in the Al - current compared to the oxide. Thus aluminum nitride shows the promise of increasing the sensitivity and precision of low-level 26Al-accelerator mass spectrometry.
AB - A high intensity cesium sputter source was used to measure the current of secondary Al- ions from aluminum nitride (AlN), aluminum diboride (AlB2), aluminum carbide (Al4C3), aluminum powder and aluminum oxide (Al2O3). It was found that AlN produced a substantially higher beam current than Al2O3. Aluminum diboride produced about the same amount of Al- current as the oxide while Al4C3 and the aluminum powder did not perform as well as the oxide. The performance of AlN as a target material for Al- ions depended heavily upon the exposure of AlN to air before being placed in the ion source. For samples with no exposure to air, the AlN produced much less current than Al2O3. For samples with a very short exposure to air, AlN yielded a fivefold improvement in the Al - current compared to the oxide. Thus aluminum nitride shows the promise of increasing the sensitivity and precision of low-level 26Al-accelerator mass spectrometry.
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U2 - 10.1016/j.nimb.2004.04.053
DO - 10.1016/j.nimb.2004.04.053
M3 - Article
AN - SCOPUS:3943076492
SN - 0168-583X
VL - 223-224
SP - 263
EP - 266
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - SPEC. ISS.
ER -