Guiding of argon ions through a tapered glass capillary

Kreller, M.; Zschornack, G.; Kentsch, Ulrich

doi:10.1016/j.nimb.2010.12.060

Cited by 27 publications

(18 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results were found in Ref. [27] that for 24 keV Ar8+ ions transmitted through a single tapered glass capillary, the ion yield at small angles is suppressed.…”

Section: B Yield Of H2+ Ions For Different Energiessupporting

confidence: 91%

“…Moreover, when low-energy Ar8+ ions were guided through a single tapered glass capillary, the transmission at small angles was suppressed [27], However, all of these studies were performed on the basis of a macroscopic single capillary and typical positive ions. Hence, it is instructive to further investigate the transmission of molecular ions through a multitude of tapered capillaries of //m size.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Double-peak structures in transmission ofH2+ions through conical multicapillaries in a polymer: Projectile-energy dependence

et al. 2015

View full text Add to dashboard Cite

Transmission experiments o f7-200 keV H2+ ions through conical multicapillaries with inlet or outlet diameters of 4/2 gm and a length of 30 g m etched in a PC polymer are reported. The yield of the transmitted particles as a function of the capillary tilt angle was measured. The results show that for 200 keV H2+ ions the guiding effect disappears but a focusing effect is obtained with a density enhancement factor of 3.5. For 7-50 keV H2+ ions their transmitted particle curves exhibit a pair of shoulder peaks on the left-and right-hand side of the center angle 0 . As the ion energy increases, the shoulder-peak structure is found to vanish leaving one peak at 0°.

show abstract

“…Similar results were found in Ref. [27] that for 24 keV Ar8+ ions transmitted through a single tapered glass capillary, the ion yield at small angles is suppressed.…”

Section: B Yield Of H2+ Ions For Different Energiessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Double-peak structures in transmission ofH2+ions through conical multicapillaries in a polymer: Projectile-energy dependence

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Insulator foils, such as polyethylene terephthalate (PET) [12][13][14][15][16][17][18], SiO 2 [19][20][21], Al 2 O 3 [22][23][24], and polycarbonate (PC) [18,25,26], with the multitude of nano-scale capillaries have been used in the experiments employing slow HCI beams. The transmission has been observed with not only these foils but also single tapered glass capillary optics to produce slow HCI microbeams [27][28][29][30]. The theoretical investigation has been also reported [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Resistive switching induced on a glass plate by ion beam irradiation

Ikeda¹,

Iwai²,

Kojima³

et al. 2012

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

“…We expect that this phenomenon is responsible for the nonblocking of the tapered glass capillary in the measurements shown by M. Kreller et al [15]. They showed that over 20 nC were injected into a conical borosilicate capillary of estimated capacity of 1 pF, using a 80 pA, Ar 8+ beam at 24 keV for over 4 min.…”

Section: Rapid Communicationsmentioning

confidence: 87%

“…The outer surface of the capillary is covered with a conductive layer (silver paint), except for 3 mm behind the entrance (see Fig. 1), which acts as a resistor of (1.1 ± 0.2) × 10 15 . The outer metallic surface, of an estimated capacity of 0.9 pF, was connected by a thin copper cable of negligible capacity to a plate electrode placed behind the capillary exit, which was acting as a deflector with its grounded pair.…”

mentioning

confidence: 99%

Evolution of the electric potential of an insulator under charged particle impact

et al. 2017

View full text Add to dashboard Cite

Insulating glass capillaries have been shown to lead to ion transmission without any change in either the ion charge state or in the ion kinetic energy. This surprising process has been attributed to a self-organized distribution of charge patches creating the necessary guiding electric potential on the capillary walls. By the use of our original electrometer, it has been possible to measure and monitor simultaneously and in a nondestructive way the electric potential and the transmitted beam intensity during the charging up by an Ar + ion beam. We show that glass microcapillaries can reach potentials higher than 500 V, even in the case of singly charged ions, opening the possibility of high transmission rates and providing a renewed sight into ion beam transport by tapered capillaries. The setup, also suitable for the determination of leakage currents governing the capillary potential dynamics, allowed one to evidence that secondary electrons may strongly affect the rise of the capillary potential and consequently avoid Coulomb blocking of the beam transmission across insulating capillaries. DOI: 10.1103/PhysRevA.95.030702 Under charged particles impact, insulator surfaces accumulate electric charges, generating an electric field that, if sufficiently strong, prevents the following beam particles to hit the insulator surface. This basic property led to the discovery that slow ions can pass through insulator capillaries, keeping their initial charge state even when the geometrical conditions do not allow it [1]. The phenomenon is called charged particle guiding by insulators and it has become an intensively studied field since its discovery . The basic concept is the transmission of charged particles through insulating capillaries under incident angles much larger than the geometrical transmission due to the self-organized formation of charge patches at the inner wall that guide the ions. Taking advantage of the existing knowledge with insulating capillaries, a unique experimental technique was developed for the investigation of charging and discharging processes in insulating surfaces. The technique is based on the combination of slow ions and a conical-shape insulator glass capillary and allows following in time the accumulated charge in the capillary with a sensitivity of 20 pC. Alternatively, it allows measuring leakage currents in the femtoampere range.When an ion beam is injected into a tapered glass capillary, most of the injected charge is stored in the dielectric and its electric potential rises. How exactly the potential evolves is difficult to monitor, which may explain why the potential of charged capillaries is hardly mentioned in the literature in the analysis of the transmission of tapered capillaries. Also, the inner resistance of most electrometers is lower or comparable to that of a glass capillary and would spuriously discharge the capillary. However, knowing the transmission rate as a function of the capillary potential, is crucial for the understanding of the charge dynamics in capillarie...

show abstract

Guiding of argon ions through a tapered glass capillary

Cited by 27 publications

References 22 publications

Double-peak structures in transmission ofH2+ions through conical multicapillaries in a polymer: Projectile-energy dependence

Double-peak structures in transmission ofH2+ions through conical multicapillaries in a polymer: Projectile-energy dependence

Resistive switching induced on a glass plate by ion beam irradiation

Evolution of the electric potential of an insulator under charged particle impact

Contact Info

Product

Resources

About