Development and utilization of a retarding analyzer for field emission investigation of LaB6/W emitter

Ahmed A. A. AL-TABBAKH; Mahendra A. MORE; Dilip S. JOAG

Article Details

Development and utilization of a retarding analyzer for field emission investigation of LaB6/W emitter

Authors:

Ahmed A. A. AL-TABBAKH | Mahendra A. MORE | Dilip S. JOAG

Publisher:

TUBITAK

Journal:

Turkish Journal of Physics 2013 Vol.37 Issue 2, pp.219-228

Document Type:

Article

Publication Date:

1/2013

Document Language:

Turkish

Document ID (Org No.):

2000760240

Frequency:

Bimonthly

eISSN:

1303-6122

pISSN:

1300-0101

Keywords:

Abstract:

 

A cold field emission from LaB6/W-coated cathodes has been  investigated with a high-accuracy and low-cost retarding field  analyzer instrument.  Guidelines are provided for measurements of  Fowler-Nordheim (FN) characteristics and total energy distributions  using a single set-up and direct detection technique to address  presumed shortages in sophisticated instrumental requirements for  integral investigation.  Electron emission from LaB6 nanoprotrusions,  deposited on a tungsten microtip, was successfully investigated.  Results emphasize a metallic behavior of the emitter in accordance  with the FN theory.  No size effects were observed for protrusions of  300 nm in radii.

 

A cold field emission from LaB6/W-coated cathodes has been  investigated with a high-accuracy and low-cost retarding field  analyzer instrument.  Guidelines are provided for measurements of  Fowler-Nordheim (FN) characteristics and total energy distributions  using a single set-up and direct detection technique to address  presumed shortages in sophisticated instrumental requirements for  integral investigation.  Electron emission from LaB6 nanoprotrusions,  deposited on a tungsten microtip, was successfully investigated.  Results emphasize a metallic behavior of the emitter in accordance  with the FN theory.  No size effects were observed for protrusions of  300 nm in radii.

Article Details

Development and utilization of a retarding analyzer for field emission investigation of LaB6/W emitter

Authors:

Ahmed A. A. AL-TABBAKH | Mahendra A. MORE | Dilip S. JOAG

Publisher:

TUBITAK

Journal:

Turkish Journal of Physics 2013 Vol.37 Issue 2, pp.219-228

Document Type:

Article

Publication Date:

1/2013

Document Language:

Turkish

Document ID (Org No.):

2000760240

Frequency:

Bimonthly

eISSN:

1303-6122

pISSN:

1300-0101

Field electron emission

Fowler-Nordheim theory

total energy distribution

retarding field analyzer

Issues

Article Details

Development and utilization of a retarding analyzer for field emission investigation of LaB6/W emitter

Authors: Ahmed A. A. AL-TABBAKH | Mahendra A. MORE | Dilip S. JOAG

Publisher: TUBITAK

Journal: Turkish Journal of Physics 2013 Vol.37 Issue 2, pp.219-228

Document Type: Article

Publication Date: 1/2013

Document Language: Turkish

Document ID (Org No.): 2000760240

Frequency: Bimonthly

eISSN: 1303-6122

pISSN: 1300-0101

Field electron emission

Fowler-Nordheim theory

total energy distribution

retarding field analyzer

Issues

Authors:

Ahmed A. A. AL-TABBAKH | Mahendra A. MORE | Dilip S. JOAG

Publisher:

TUBITAK

Journal:

Turkish Journal of Physics 2013 Vol.37 Issue 2, pp.219-228

Document Type:

Article

Publication Date:

1/2013

Document Language:

Turkish

Document ID (Org No.):

2000760240

Frequency:

Bimonthly

eISSN:

1303-6122

pISSN:

1300-0101