Production of low-vibrational-state H<sub>2</sub><sup>+</sup>ions for collision studies

Sen, Ananya; McGowan, J. Wm.; Mitchell, Jack

doi:10.1088/0022-3700/20/7/018

Cited by 17 publications

(10 citation statements)

References 13 publications

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“…populated could be produced. 15 This paper describes new measurements for the dissociative recombination of H 2 + ions formed with use of this ion source.…”

mentioning

confidence: 99%

Dissociative recombination of electrons withH2+in low vibrational states

et al. 1988

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Cross sections for the dissociative recombination of electrons and H2 + ions having low internal energies have been measured by means of the merged electron-ion beam technique. Narrow resonances associated with indirect capture into high-lying Rydberg states of the neutral molecule have been found. The use of ions with only two vibrational states significantly populated has allowed the high-resolution capability of the merged-beam technique to be clearly demonstrated.

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“…populated could be produced. 15 This paper describes new measurements for the dissociative recombination of H 2 + ions formed with use of this ion source.…”

mentioning

confidence: 99%

Dissociative recombination of electrons withH2+in low vibrational states

et al. 1988

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“…A strategy must be developed to remove these loosely bound ions from the beam before reaching the highest energies or preferably to extract a "cold" beam from the source. Sen et al 3 suggested that introducing a noble gas, Ne or He, into the ion source would cause removal of these weakly bound states through collisional dissociation,…”

Section: H 2 + Ion Sources and Vibrational Statesmentioning

confidence: 99%

Ion source issues for the DAEδALUS neutrino experiment

Alonso

Barletta

Toups

et al. 2014

Review of Scientific Instruments

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The DAEδALUS experiment calls for 10 mA of protons at 800 MeV on a neutrino-producing target. To achieve this record-setting current from a cyclotron system, H2 (+) ions will be accelerated. Loosely bound vibrationally excited H2 (+) ions inevitably produced in conventional ion sources will be Lorentz stripped at the highest energies. Presence of these states was confirmed at the Oak Ridge National Laboratory and strategies were investigated to quench them, leading to a proposed R&D effort towards a suitable ion source for these high-power cyclotrons.

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“…We are investigating ways to remove the high vibrational states. Work in collaboration with Oak Ridge National Laboratory retested the methods of Sen, et al [66], which involve introducing a noble gas into the ion source. Results were difficult to interpret in the first round of tests; however, dissociation of these vibrational states by this mechanism in the ion source is believed to require long (millisecond) residency times of the ions prior to extraction.…”

Section: Areas Of Randd -A Summary For Each Phasementioning

confidence: 99%

Whitepaper on the DAEdALUS Program

Aberle¹,

Adelmann²,

Alonso³

et al. 2013

Preprint

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This whitepaper describes the status of the DAEδALUS program for development of high power cyclotrons as of the time of the final meeting of the Division of Particles and Fields 2013 Community Study ("Snowmass"). We report several new results, including a measurement capability between ∼4 and 12 degrees on the CP violating parameter in the neutrino sector. Past results, including the capability of the IsoDAR high ∆m 2 νe disappearance search, are reviewed. A discussion of the R&D successes, including construction of a beamline teststand, and future plans are provided. This text incorporates short whitepapers written for subgroups in the Intensity Frontier and Frontier Capabilities Working Groups that are available on the Snowmass website.

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Production of low-vibrational-state H₂⁺ions for collision studies

Cited by 17 publications

References 13 publications

Dissociative recombination of electrons withH2+in low vibrational states

Dissociative recombination of electrons withH2+in low vibrational states

Ion source issues for the DAEδALUS neutrino experiment

Whitepaper on the DAEdALUS Program

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Production of low-vibrational-state H2+ions for collision studies

Cited by 17 publications

References 13 publications

Dissociative recombination of electrons withH2+in low vibrational states

Dissociative recombination of electrons withH2+in low vibrational states

Ion source issues for the DAEδALUS neutrino experiment

Whitepaper on the DAEdALUS Program

Contact Info

Product

Resources

About

Production of low-vibrational-state H₂⁺ions for collision studies