Testing the atomic structure of beryllium with AMS

Javorsek, D.; Elmore, D.; Fischbach, Ephraim; Miller, Thomas E.; Stohler, Michael L.; Bourgeois, M.; Hillegonds, D. J.; Marder, James M.; Rohrs, Henry W.; Vogt, S.

doi:10.1016/s0168-583x(02)00663-8

Cited by 6 publications

(15 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Very low limits for a violation of PEP of <10 −21 and <10 −14 were found for non-Paulian 20 Ne in normal 20 Ne and for non-Paulian 5 Li in Lithium, respectively. A test of non-Paulian beryllium with all four electrons in the K shell (helium-like atoms) was performed with AMS by the PRIME Lab of Purdue University [107]. No non-Paulian Be events were observed and stringent concentration limits were set for a variety of materials investigated.…”

Section: Testing the Pauli Exclusion Principlementioning

confidence: 99%

Accelerator mass spectrometry: state of the art and perspectives

Kutschera

2016

Advances in Physics: X

View full text Add to dashboard Cite

Accelerator mass spectrometry (AMS) is sometimes called 'the art of counting atoms one by one'. In addition to counting individual atoms, AMS is also capable to determine both mass number (A) and atomic number (Z). Since an atom (also called a nuclide) is unambiguously characterized by the proton number (Z) and the neutron number (N = A − Z), a rare nuclide can be well separated from possible background events, and extremely low abundances of specific nuclides can be measured. In general, the use of an accelerator system as a mass spectrometer improves the isotope abundance sensitivity by many orders of magnitude as compared to standard mass spectrometry (without an accelerator). In particular, AMS provides the means to measure minute traces of long-lived radioisotopes of cosmogenic and/or anthropogenic origin in essentially every domain of our environment at large. This allows one to use AMS for performing research in many different areas, ranging from archaeology to astrophysics. In this review, an update of the current status of AMS and an outlook to future developments in both technical and applied aspects will be presented. The transition from Mass Spectrometry (MS) to Accelera tor Mass Spectrometry (AMS)

show abstract

Section: Testing the Pauli Exclusion Principlementioning

confidence: 99%

Accelerator mass spectrometry: state of the art and perspectives

Kutschera

2016

Advances in Physics: X

View full text Add to dashboard Cite

show abstract

“…Routine performance was almost as good as that obtained when biochemical samples were analysed using a 10 MV AMS system. A compact instrument, originally designed for radiocarbon analysis, has been tested for the determination of other radionuclides, in particular 26 Al and 10 Be. 21 Although yields of these isotopes were similar to those obtained with higher energy systems, problems of high background levels remained to be addressed.…”

Section: Instrumentationmentioning

confidence: 99%

“…A new gas introduction system was found necessary in order to increase the efficiency of conversion of Be to BeO 2 for AMS analysis. 26 A specially designed cathode allowed the gas to enter the ion source directly adjacent to the oxide surface (Sm 2 O 3 or Yb 2 O 3 ) needed to create the BeO 2 beam. Six holes were drilled around the rim of the cathode and the oxide packed in the area just beside the holes.…”

Section: Instrumentationmentioning

confidence: 99%

“…The determination of 26 Al usually involves extraction of atomic Al 2 ions from the ion source because Mg does not form Mg 2 ions and therefore causes no problems of interference. The formation of Al 2 ions is not very efficient, however, and in a study of the small amounts of 26 Al resulting from nuclear reactions the measurement of AlO 2 ions was chosen because they were produced with a much higher yield than Al 2 ions.…”

Section: Developments In the Analysis Of Elements Other Than Carbonmentioning

confidence: 99%

See 1 more Smart Citation

Atomic spectrometry update. Atomic mass spectrometry

Bacon¹,

Greenwood²,

Vaeck

et al. 2003

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

“…Although the principle has been spectacularly confirmed by the number and accuracy of its predictions, it remains somewhat mysterious, and, given its basic standing in quantum theory, it is appropriate to carry out precise tests of its validity. Indeed, mostly in the last 15-20 years, several experiments have searched for possible small violations [3][4][5][6][7][8][9][10]. Quite often, these searches originated as by-products of experiments dedicated to different kinds of physics (like, e.g., dark matter searches, proton decay, etc.…”

Section: Introductionmentioning

confidence: 99%

The VIP Experimental Limit on the Pauli Exclusion Principle Violation by Electrons

et al. 2009

View full text Add to dashboard Cite

In this paper we describe an experimental test of the validity of the Pauli Exclusion Principle (for electrons) which is based on a straightforward idea put forward a few years ago by Ramberg and Snow (Phys. Lett. B 238:438, 1990). We perform a very accurate search of X-rays from the Pauli-forbidden atomic transitions of electrons in the already filled 1S shells of copper atoms. Although the experiment has a very simple structure, it poses deep conceptual and interpretational problems. Here we describe the experimental method and recent experimental results, which we interpret in the framework of quon theory. We also present future plans to upgrade the experimental apparatus using Silicon Drift Detectors.

show abstract

Testing the atomic structure of beryllium with AMS

Cited by 6 publications

References 26 publications

Accelerator mass spectrometry: state of the art and perspectives

Accelerator mass spectrometry: state of the art and perspectives

Atomic spectrometry update. Atomic mass spectrometry

The VIP Experimental Limit on the Pauli Exclusion Principle Violation by Electrons

Contact Info

Product

Resources

About