Cross section measurements of the 1H(4He, 4He)1H elastic recoil reaction for ERD analysis

Szilágyi, E.; Pászti, F.; Manuaba, A.; Hajdu, C.; Kótai, E.

doi:10.1016/0168-583x(89)90397-2

Cited by 30 publications

(1 citation statement)

References 8 publications

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“…Elastic recoil detection ͑ERD͒ thus allows the areal densities of H and D on the sample to be independently measured. Samples cleaned and dosed with atomic D as described above had only D with no detectable H. Since the differential scattering cross sections for H or D recoiled by 4 He are known, [23][24][25] the areal density of H or D on the sample can be absolutely determined from the measured ERD yields. The absolute accuracy of values for H and D coverage determined from ERD yields is estimated to be Ϯ6% for D and Ϯ20% for H, due mainly to uncertainties in the scattering cross sections.…”

Section: B Ion-beam Analysis and Transmission-ion-channeling Measurementioning

confidence: 99%

Transmission-ion-channeling studies of the silicon (111) monohydride surface

Wampler

1997

Phys. Rev. B

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Transmission ion channeling was used to examine the atomic position of deuterium on the silicon ͑111͒ monohydride surface. A 2-MeV 4 He ϩ -ion beam was used to elastically recoil deuterium from the beam-exit surface of a thin silicon crystal. The yield of recoiled deuterium was measured versus angle between the analysis beam and the channeling axis near the ͗111͘, ͗110͘, and ͗100͘ axes. The location of the surface deuterium relative to the silicon lattice was examined by comparing the measured yields with computer simulations of ion channeling. Channeling measurements were consistent with approximately half of the deuterium occupying a site close to the site predicted by ab initio calculations of the structure for the Si͑111͒ 1ϫ1 monohydride surface, with the remaining deuterium being disordered or displaced from the predicted site.

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Section: B Ion-beam Analysis and Transmission-ion-channeling Measurementioning

confidence: 99%

Transmission-ion-channeling studies of the silicon (111) monohydride surface

Wampler

1997

Phys. Rev. B

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Detection and determination of elemental contents by elastic scattering of light ions and by recoiling nuclei measurements

Kopta¹,

Lekki²,

Rajchel³

1993

Journal of Radioanalytical and Nuclear Chemistry, Articles

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Developments in nuclear techniques for hydrogen depth profiling

Avasthi

1996

Bull. Mater. Sci.

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~bstraet, Hydrogen plays a crucial roIe in the properties of various materials, devices and in growth of hydrogenated amorphous materials. Therefore, its quantification and determination of concentration at various depths is of immense interest. Among various techniques of hydrogen depth profiling, the nuclear techniques being non-destructive in nature are widely used. Elastic recoil detection analysis (ERDA) with helium ions was first used for hydrogen depth profiling. Later on, the heavy ions were utilised due to certain advantages. It has been qmwn recently by us that H alongwith other elements in thin film up to Ca can be detected simultaneously with heavy ion ERDA, if the elements being detected are well separated in masses. It also has been shown that even the neighbouring elements such as C, N, O alongwith H can be detected provided a AE-E detector telescope is used in ERDA. The time of flight (FOF) with ERDA, nuclear reaction analysis (NRA), neutron TOF are other nuclear techniques for hydrogen profiling. There are. however, certain problems that arise in nuclear techniques such as hydrogen loss during the measurement, which must be taken into account for accurate and reliable results. A scenario of developments in nuclear techniques with suitable examples is given in this brief review.

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Cross section measurements of the 1H(4He, 4He)1H elastic recoil reaction for ERD analysis

Cited by 30 publications

References 8 publications

Transmission-ion-channeling studies of the silicon (111) monohydride surface

Transmission-ion-channeling studies of the silicon (111) monohydride surface

Detection and determination of elemental contents by elastic scattering of light ions and by recoiling nuclei measurements

Developments in nuclear techniques for hydrogen depth profiling

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