Ion optics of probe-forming systems on the base of magnetic quadrupole lenses with conical aperture
This paper describes the performance of probe-forming systems based on a new type of magnetic quadrupole lens with a conical aperture (MQL CA). The main difference in the MQL CA from the conventional quadrupole lens with a cylindrical aperture is that the poles in it are not parallel to the lens axi...
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| Veröffentlicht in: | Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2015-04, Vol.348, p.88-91 |
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| container_title | Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms |
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| creator | Ponomarova, A.A. Vorobjov, G.S. Ponomarev, A.G. |
| description | This paper describes the performance of probe-forming systems based on a new type of magnetic quadrupole lens with a conical aperture (MQL CA). The main difference in the MQL CA from the conventional quadrupole lens with a cylindrical aperture is that the poles in it are not parallel to the lens axis and positioned at a certain angle. The basic advantage of such a lens is that the conical angle of the aperture allows the profile of the longitudinal distribution of the main components of the quadrupole field to be changed. It provides for the changing of the focal length value, displacement of the principal plane relative to the centre of the lens and aberration variations depending on the conical angle. A theoretical study of the ion optics of the probe-forming systems consisting of a triplet MQLs CA was carried out. A comparison of the systems with MQLs CA and conventional systems based on the magnetic quadrupole lens (MQL) with a cylindrical aperture shows the possibility of increasing the acceptance of the first due to using the new type of lens. |
| doi_str_mv | 10.1016/j.nimb.2014.11.069 |
| format | Article |
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The main difference in the MQL CA from the conventional quadrupole lens with a cylindrical aperture is that the poles in it are not parallel to the lens axis and positioned at a certain angle. The basic advantage of such a lens is that the conical angle of the aperture allows the profile of the longitudinal distribution of the main components of the quadrupole field to be changed. It provides for the changing of the focal length value, displacement of the principal plane relative to the centre of the lens and aberration variations depending on the conical angle. A theoretical study of the ion optics of the probe-forming systems consisting of a triplet MQLs CA was carried out. 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A comparison of the systems with MQLs CA and conventional systems based on the magnetic quadrupole lens (MQL) with a cylindrical aperture shows the possibility of increasing the acceptance of the first due to using the new type of lens.</description><subject>Aberration</subject><subject>Apertures</subject><subject>Displacement</subject><subject>Ion optics</subject><subject>Lenses</subject><subject>Magnetic lenses</subject><subject>Poles</subject><subject>Quadrupoles</subject><issn>0168-583X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNotkMtqwzAQRbVooenjB7rSshu7ejr2soQ-AoFuWuhOSPIocbAlR7Ip-fvKpLOZxT0zcA9Cj5SUlNDq-Vj6bjAlI1SUlJakaq7QKgd1IWv-c4NuUzqSPJLLFbLb4HEYp84mHBweYzBQuBCHzu9xOqcJhhx4PB0AG51ggQa995Av8GnWbZzH0APuwSdI-LebDtgG31ndYz1CnOYI9-ja6T7Bw_--Q99vr1-bj2L3-b7dvOwKKxiZCsMlUAea11UrWi5ra4RgrWDU6MYArZwEJ5xsnbG5HBVQScaNlYSymq_X_A49Xf7mFqcZ0qSGLlnoe-0hzEnRdcNZI0TDMsouqI0hpQhOjbEbdDwrStRiUR3VYlEtFhWlKlvkf73sapA</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Ponomarova, A.A.</creator><creator>Vorobjov, G.S.</creator><creator>Ponomarev, A.G.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20150401</creationdate><title>Ion optics of probe-forming systems on the base of magnetic quadrupole lenses with conical aperture</title><author>Ponomarova, A.A. ; Vorobjov, G.S. ; Ponomarev, A.G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c420t-b35e1fea386d4d358cb442d421ba9be16f5ef4f5dfbc20114e6523bc501283773</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Aberration</topic><topic>Apertures</topic><topic>Displacement</topic><topic>Ion optics</topic><topic>Lenses</topic><topic>Magnetic lenses</topic><topic>Poles</topic><topic>Quadrupoles</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ponomarova, A.A.</creatorcontrib><creatorcontrib>Vorobjov, G.S.</creatorcontrib><creatorcontrib>Ponomarev, A.G.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nuclear instruments & methods in physics research. 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A comparison of the systems with MQLs CA and conventional systems based on the magnetic quadrupole lens (MQL) with a cylindrical aperture shows the possibility of increasing the acceptance of the first due to using the new type of lens.</abstract><doi>10.1016/j.nimb.2014.11.069</doi><tpages>4</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Aberration Apertures Displacement Ion optics Lenses Magnetic lenses Poles Quadrupoles |
| title | Ion optics of probe-forming systems on the base of magnetic quadrupole lenses with conical aperture |
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