M17

27問 • 1年前

ユーザ名非公開

通報

問題一覧

when an atom absorbs a photon, the atom becomes

excited

when energy absorbed as photon, an electron is moved to a higher energy level where it is

unstable

an excited electrons is not stable and will return to

ground state

an analytical technique used to the analysis of solid and conducting materials

glow discharge atomic emission spectrometry

GD AES primary of interest

depth profiling technique on samples

emission spectrum generated by bombardment of samples by argon ions in a sputtering process

GD AES principle

glow dicharge lamp is analogous to

hollow cathode lamp

limited to samples that are electrically conducting

gd aes application

limited scope for sample types

GD AES disadvantage

ability to rapidly and accurately determine a depth of profile

GD AES application

a type of emission spectrometry that uses plasma

plasma emission spectrometry

laser excitation is sometimes used

pes

different combination of prism and diffraction grating can be used

pes instrumentation

instruments are computerized in operation and make use of automatic sample handling

pes instrumentation

sample requires dissolution before analysis

pes disadvantage

instrumentation is complex and expensive to purchase and operate

pes disadvantage

PES sources

direct coupled plasma source, inductively coupled plasma source

in this source, initial heating of an inert gas

dcp

in this source, it has become the most popular

icp

second plasma emission source

icp

an ion source that consist of a torch that is surrounded by a radio frequency generator

icp

a nebulizer is used to inject the sample

dcp

a common vertion of DC uses

inveted Y shaped electrode assembly

qualitative analysis may be made by searching emission or spectrum for characteristic elemental lines

analytical measurements

it is usually produced by dc-arc

argon

combination of prism and diffraction grating

echelle optical system

plsma source are characterized by

great stability

CHAPTER-9

CHAPTER-9

CHAPTER-5

CHAPTER-5

CHAPTER 3

CHAPTER 3

HIS 3-5

HIS 3-5

BIOSTAT 2-3-6

BIOSTAT 2-3-6

BIOSTAT- 1

BIOSTAT- 1

ANACHEM M3

ANACHEM M3

ANACHEM M4

ANACHEM M4

HIS MOD 9-11

HIS MOD 9-11

earth origin

earth origin

BIOSTAT-CHAPTER- 7

BIOSTAT-CHAPTER- 7

BIOSTAT-CHAPTER-8

BIOSTAT-CHAPTER-8

BIOSTAT-CHAPTER-9

BIOSTAT-CHAPTER-9

ANACHEM CHAP 9

ANACHEM CHAP 9

ANACHEM CHAP 10

ANACHEM CHAP 10

Oral com

Oral com

CHAPTER 9 (mod-12-13)

ユーザ名非公開 · 56問 · 1年前

CHAPTER 9 (mod-12-13)

POT UNIT 4

POT UNIT 4

BIOSTAT CHAP 10

BIOSTAT CHAP 10

ANACHEM 11-12

ANACHEM 11-12

問題一覧

when an atom absorbs a photon, the atom becomes

excited

when energy absorbed as photon, an electron is moved to a higher energy level where it is

unstable

an excited electrons is not stable and will return to

ground state

an analytical technique used to the analysis of solid and conducting materials

glow discharge atomic emission spectrometry

GD AES primary of interest

depth profiling technique on samples

emission spectrum generated by bombardment of samples by argon ions in a sputtering process

GD AES principle

glow dicharge lamp is analogous to

hollow cathode lamp

limited to samples that are electrically conducting

gd aes application

limited scope for sample types

GD AES disadvantage

ability to rapidly and accurately determine a depth of profile

GD AES application

a type of emission spectrometry that uses plasma

plasma emission spectrometry

laser excitation is sometimes used

pes

different combination of prism and diffraction grating can be used

pes instrumentation

instruments are computerized in operation and make use of automatic sample handling

pes instrumentation

sample requires dissolution before analysis

pes disadvantage

instrumentation is complex and expensive to purchase and operate

pes disadvantage

PES sources

direct coupled plasma source, inductively coupled plasma source

in this source, initial heating of an inert gas

dcp

in this source, it has become the most popular

icp

second plasma emission source

icp

an ion source that consist of a torch that is surrounded by a radio frequency generator

icp

a nebulizer is used to inject the sample

dcp

a common vertion of DC uses

inveted Y shaped electrode assembly

qualitative analysis may be made by searching emission or spectrum for characteristic elemental lines

analytical measurements

it is usually produced by dc-arc

argon

combination of prism and diffraction grating

echelle optical system

plsma source are characterized by

great stability