In this section
@article{Xu:2014:10.1016/j.nimb.2014.04.009,
author = {Xu, S and Freeman, SPHT and Rood, DH and Shanks, RP},
doi = {10.1016/j.nimb.2014.04.009},
journal = {Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms},
pages = {42--45},
title = {26Al interferences in accelerator mass spectrometry measurements},
url = {http://dx.doi.org/10.1016/j.nimb.2014.04.009},
volume = {333},
year = {2014}
}
TY - JOUR
AB - The identification of interferences to <sup>26</sup>Al was conducted with a 5 MV tandem accelerator mass spectrometer. In addition to <sup>9</sup>Be <sup>1+</sup>, <sup>17</sup>O<sup>2+</sup> and <sup>35</sup>Cl<sup>4+</sup> ions observed previously, this study confirmed existence of the most significant interference <sup>37</sup>Cl<sup>4+</sup> continuum ion to 16 MeV <sup>26</sup>Al<sup>3+</sup> by measuring primary standard mixed with Cl with various <sup>37</sup>Cl/<sup>35</sup>Cl ratios. The <sup>37</sup>Cl<sup>-</sup> ions were formed by <sup>37</sup>Cl<sup>16</sup>O<sup>-</sup> molecular-dissociation before the injection magnet, resulting in -0.7% of <sup>26</sup>Al<sup>-</sup> magnetic rigidity. Subsequently, the <sup>37</sup>Cl<sup>4+</sup> ions have ME/q<sup>2</sup> value that differ from <sup>26</sup>Al<sup>3+</sup> by -0.1%. These allow the <sup>37</sup>Cl <sup>-</sup> and <sup>37</sup>Cl<sup>4+</sup> to simultaneously pass through injection magnet, analytical magnet and high-energy analyser, and finally reach the detector with <sup>26</sup>Al<sup>3+</sup>. Further investigations on high charge states (<sup>26</sup>Al<sup>5+</sup> and <sup>26</sup>Al<sup>7+</sup>) indicate that the problem of interferences is generic. That is, interferences closest to 24 MeV <sup>26</sup>Al<sup>5+</sup> ions include <sup>10</sup>B <sup>2+</sup>, <sup>16</sup>O<sup>3+</sup>, <sup>35</sup>Cl<sup>7+</sup> and <sup>37</sup>Cl<sup>7+</sup> ions
AU - Xu,S
AU - Freeman,SPHT
AU - Rood,DH
AU - Shanks,RP
DO - 10.1016/j.nimb.2014.04.009
EP - 45
PY - 2014///
SN - 0168-583X
SP - 42
TI - 26Al interferences in accelerator mass spectrometry measurements
T2 - Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
UR - http://dx.doi.org/10.1016/j.nimb.2014.04.009
VL - 333
ER -