Patent US4455486A successfully refreshed from Google Patents.
US4455486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting magnetism by means of electron spin polarization measurements through dielectronic transition
Assignee: Individual
•
Filing: 1981-08-12
•
Granted: 1984-06-19
•
Expires: 2001-08-12
Abstract
Abstract A beam of particles which undergoes a known charge state change in response to an exchange of two electrons having preoriented moments is generated. The beam is focused on a body, the magnetic properties of which are to be determined, in such a manner that the beam is reflected from the surface of the body. The number of particle charge state changes which occurred are measured in the reflected beam and provide an indication of the square of the magnetic value of the body and shows the magnetic state of the surface of the body.
Inventors
- 👤 Carl Rau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:51
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/201; H; H01; H01J; H01J37/00; H01J37/26; H01J37/266; H01J2237/00; H01J2237/245; H01J2237/24507; H01J2237/24557
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
A method for determining the magnetic characteristics of a body, comprising: generating a beam of particles, which particles undergo a known charge state change in response to an exchange of 2 electrons having predetermined magnetic moments; focusing said beam on said body such that said beam is reflected from the surface of said body; and measuring the number of particle charge state changes which occurred as a result of an exchange of 2 electrons in said reflected beam, as an indication of the magnetic value of the body.
Claim 2
Independent Claim
88 words
A method for determining the magnetic characteristics of a body, comprising: generating a beam of particles, which particles undergo a known charge state change in response to an exchange of 2 electrons having predetermined magnetic moments; focusing said beam on said body such that said beam is reflected from the surface of said body; and measuring the number of particle charge state changes which occurred as a result of an exchange of 2 electrons in said reflected beam, as an indication of the magnetic value of the body.
Claim 3
Dependent Claim
24 words
The method as set forth in claim 1, wherein the step of generating a beam comprises forming said beam from He and heavier particles.
Claim 4
Dependent Claim
23 words
The method as set forth in claim 2, wherein the step of measuring comprises detection of singulet and triplet states of said particles.
Claim 5
Dependent Claim
29 words
The method as set forth in claim 1, wherein the step of measuring comprises electrostatically separating different charged components of said beam and simultaneously detecting the separated beam components.
Claim 6
Dependent Claim
20 words
The method as set forth in claim 1, wherein the step of measuring comprises taking current measurements in said beam.
Claim 7
Dependent Claim
32 words
The method as set forth in claim 1 and further including the step of calibrating the measured number of ionization state changes through measurements of the temperature dependence of the magnetic value.
Claim 8
Dependent Claim
10 words
Apparatus for determining the magnetic characteristics of a body, comprising:
Claim 9
Dependent Claim
10 words
Apparatus for determining the magnetic characteristics of a body, comprising:
Claim 10
Dependent Claim
83 words
means for generating a beam of particles, which particles undergo a known ionization state change in response to an exchange of two electrons having predetermined angular moments; means for focusing said beam on said body such that said beam is reflected from the subface of said body; and means for measuring the number of particle ionization state changes which occurred as a result of an exchange of 2 electrons in said reflected beam, as an indication of the magnetic value of the body.
Claim 11
Dependent Claim
83 words
means for generating a beam of particles, which particles undergo a known ionization state change in response to an exchange of two electrons having predetermined angular moments; means for focusing said beam on said body such that said beam is reflected from the subface of said body; and means for measuring the number of particle ionization state changes which occurred as a result of an exchange of 2 electrons in said reflected beam, as an indication of the magnetic value of the body.
Claim 12
Dependent Claim
18 words
The apparatus as set forth in claim 7, wherein said particles comprise H, D, He or heavier particles.
Claim 13
Dependent Claim
24 words
The apparatus as set forth in claim 8, wherein said means for measuring includes means for detecting singulet or triplet states of said particles.
Claim 14
Dependent Claim
22 words
The apparatus as set forth in claim 7, wherein said means for measuring comprises electrostatically separating differing charged components of said beam.
References Cited (Backward Citations)
US3401261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |